Showing posts with label Ponziani. Show all posts
Showing posts with label Ponziani. Show all posts

Saturday, 6 December 2025

Correspondence Chess

I PLAY correspondence chess at the Fide-recognised International Correspondence Chess Federation, where the strength of modern engines means most games are drawn, but occasionally one escapes that fate, or is interesting for other reasons.

David Hardingham (1895) - Spanton (2330)
British Correspondence Chess Championship Reserves
Ponziani
1.e4 e5 2.Nf3 Nc6 3.c3
The Ponziani scores a respectable 55% in ChessBase's 2026 Mega database
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3...Nf6
This is the commonest continuation, but 3...d5 scores seven percentage points more.
4.d4 Nxe4
Even more popular, but less successful percentagewise, is 4...exd4.
5.d5
How should Black proceed?
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5...Bc5!?
More popular are 5...Nb8 and especially 5...Ne7, the latter being Dragon1's choice; Stockfish17.1 likes the text.
6.dxc6
Accepting the sacrifice is more-or-less obligatory as 6.Be3?! Bxe3 7.fxe3 Ne7 8.Nxe5 0-0 is good for Black.
6...Bxf2+
Probably not 6...Nxf2?! Qd5.
7.Ke2 Bb6!
The engines agree this is best, although Dragon1 is less certain than Stockfish17.1
8.Qd5!
Capturing on b7 or d7 speeds Black's coming attack.
8...Nf2
What should White play?
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9.Rg1
The alternative is 9.cxb7 Bxb7 10.Qxb7 Nxh1, with an unclear position, but one which the engines reckon probably slightly favours Black.
9...0-0
Dragon1 suggests an apparent-novelty, 9...dxc6!?
10.cxb7
Dragon1 reckons this is winning, but after ...
10...Bxb7 11.Qxb7
... downgrades White's advantage to having the upper hand. Meanwhile, Stockfish17.1 has been giving Black a steady slight edge.
11...Qf6 12.Qa6?!
Peruvian 2500+ international master Renato Terry has won Titled Tuesday blitz games with 12.Nbd2 and 12.Qd5.
12...e4!
An improvement on the known 12...Qf5.
13.Nd4 c5 14.Nc2
Black is down two pieces for two pawns, but has at least the upper hand, according to Stockfish17.1
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14...d5
Dragon1's evaluation has undergone a massive transformation - it now likes Black's position even more than Stockfish17.1 does.
15.Be3 Ng4 16.Nd2?
The engines suggest 16.Kd1 or 16.Bxc5.
16...d4
Black is recovering a major amount of material
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17.Nxe4
Or 17.cxd4 cxd4 18.Bxd4 Qf5 19.Kd1 Bxd4 20.Nxd4 Qf2 21.Qe2 (21.Rh1? Ne3+ 22.Kc1 Qe1#) Ne3+ 22.Kc1 Qxg1, with a continuing attack for Black.
17...Qg6 18.Re1 dxe3 19.Kd1 Rad8+ 20.Kc1 Qxe4
White's king has reached (relative) safety, but Black has emerged a pawn up, and the extra pawn is already on the sixth rank
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21.Qc4 Qg6 22.h3 Ne5 23.Qb5 a6!? 24.Qa4
Probably not 24.Qxa6?! Rd2 25.Na3/e3 c4.
24...c4!? 25.Bxc4 Nxc4 26.Qxc4 Rd2 27.Nd4 Qe4
27...Bxd4 is met by 28.cxd4, although this is also good for Black.
28.Qc6 Rxd4! 29.Qxe4 Rxe4 30.Re2 Rf4 31.Rge1 Rf2 32.b4 f5 33.c4 Bd4 34.Rxe3!? Bxe3 35.Rxe3 f4 36.Rf3 Rxa2 37.c5 Rxg2 38.h4 Rg3 39.Rf2 f3 40.Kd2 Rg2 0-1

Monday, 16 January 2023

Mariánské Lázně Game Three

Hartmut Moritz (2066) - Spanton (1895)
Ponziani
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6!?
This is easily the most popular move in ChessBase's 2023 Mega database, although it scores eight percentage points lower than 3...d5.
4.d4 Nxe4!?
Magnus Carlsen preferred the more common 4...exd4 in a 2013 win over Yifan Hou at Tata Steel (Wijk aan Zee, Netherlands).
5.Bd3!?
The mainline in Mega23 runs 5.d5 Ne7 6.Nxe5 Ng6 7.Nxg6 hxg6 8.Bd3 Nf6 9.0-0 with maybe a slight edge for White, according to Stockfish15 and Komodo13.02.
5...d5 6.Nxe5
The engines slightly prefer this over 6.dxe5 Bg4.
6...Nxe5 7.dxe5 Nc5?!
The knight was well-placed on e4. The c5 square is not bad either, but Black is spending a tempo driving the white light-square bishop to arguably a better square. The engines suggest 7...Bc5, claiming equality, one point being 8.Bxe4 can be met by 8...Qh4. Instead White should probably castle.
8.Bc2 Be7 9.0-0 0-0 10.Qh5!?
This may be a novelty. A known continuation is 10.b4 Ne4 11.f3, when White was at least slightly better, according to the engines, in Andrew Morley (2065) - Renāte Vidruska (2045), 4NCL Team Championship Online 2020, although Black won in 46 moves.
10...g6 11.Qe2 f6 12.Bh6 Rf7!? 13.b4?!
The engines strongly dislike this, claiming it leaves Black better. They suggest 13.exf6 Bxf6 and either 14.Nd2 or 14.Re1, when Stockfish15 gives White a slight edge but Komodo13.02 calls the position equal.
13...Ne6 14.f4
The engines prefer 14.Nd2 or 14.exf6, but give Black at least the upper hand.
How should Black respond?
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14...fxe5
This seems best, although the engines also like 14...a5!? But forcing an exchange of dark-square bishops with 14...Bf8?! throws away most of Black's advantage, according to the engines, while they reckon the passive 14...Nf8? gives White at least the upper hand after 15.Nd2.
15.f5!?
This is White's idea, whereas recapturing with 15.fxe5?! lets Black swop a pair of rooks and so relieve the pressure.
What should Black play?
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15...gxf5!
This is clearly best, according to the engines. If 15...Nf4 then 16.Bxf4 exf4 17.fxg6 hxg6 18.Bxg6 Rg7 is much better for Black, despite the exposed black king, according to the engines. However they reckon sacrificing the exchange with 16.Rxf4! exf4 17.fxg6 hxg6 18.Bxg6 is much less clear, eg 18...Rf6? 19.Qh5 wins for White. Instead Black should probably play 18...Qd6!? 19.Bxf7+ Kxf7 20.Qh5+ Qg6 21.Qxg6+ Kxg6, when 22.Bxf4 leaves White a pawn up but Black gets strong play with the bishop-pair, eg 22...Bf6 23.Kf2 (23.Bxc7? Bf5) Be6 24.Be3 a5 25.bxa5 Rxa5, although the line is not very forcing and White remains with an extra pawn.
16.Qxe5?
Better is 16.Bxf5, when 16...Nf4!? 17.Bxf4 exf4 (capturing the light-square bishop lets White equalise with 18.Bxe5, according to the engines) 18.Bxc8 leaves White a pawn down, whichever way Black recaptures, but Black has pawn weaknesses and an exposed king.
16...Bd6 17.Qe1
This seems best. Certainly not 17.Qxd5?? Bxh2+ etc.
17...Qf6
Even stronger, according to the engines, is 17...f4.
18.Be3 Qe5 19.Qg3+
This seems necessary as 19.g3? f4 is much worse for White, according to the engines.
19...Qxg3 20.hxg3 Bxg3!? 21.Bxf5 Nf8?!
Not 21...Ng7? 22.Bxh7+!, but the engines' 21...Be5 and 21...Nd4!? are probably better.
22.Bc2?
Exchanging on c8, or dropping the bishop to d3 from where it covers the king's rook, is better.
22...Rxf1+?
This is winning but much better is 23.Bxh2+!
23.Kxf1 Bd7?!
Hoping to play 24...Bb5+, but that is little more than a check. Best seems to be 23...Be5, one point being 24.Bd4?! runs into 24...Bxd4 25.cxd4 Ne6.
24.Na3?!
Preventing 24...Bb5+, but the knight has few prospects on a3. The engines give 24.Bb3 c6 (24...Bb5+ 25.Kg1 is not a problem for White) 25.Nd2, albeit with the upper hand for Black.
24...Ng6 25.Rd1 Re8 26.Bc5?!
Objectively better is 26.Bf2 Rf8 27.Rd2, but Black can simplify at will.
26...Bg4 27.Rc1 Nf4 28.Bb3 b6 29.Bf2
There seems nothing better, but White is completely lost.
29...Bxf2 30.Kxf2 Nd3+ 31.Kg3 Nxc1 32.Kxg4 Nxb3 33.axb3 c6 (0-1, 50 moves)

Tuesday, 21 September 2021

Lessons From Coulsdon II

Aaron Fernandes (1665 ECF/1531 Fide) - Spanton (1965 ECF/1747 Fide)
Coulsdon Late Summer U2000 Round 2
Ponziani
1.e4 e5 2.Nf3 Nc6 3.c3 f5!?
Ponziani-devotee Ray Kearsley says this might be Black's best response to the opening. I rather doubt that, but the move dates back to at least 1844, and indeed takes precedence in terms of age over 3...Nf6 and 3...d5, at least in ChessBase's 2021 Mega database.
How should White proceed?
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4.Bc4?
The main line in Mega21 runs 4.d4 fxe4 5.Nxe5 Nf6 6.Bg5 d6, when Stockfish14 and Komodo12.1.1 give White a tiny pull. An interesting alternative, played in the 1844 game, is 4.exf5!?, when the engines prefer 4...Qf6!? to the normal 4...e4.
The text is poor as, even if White could meet Black's next move with 5.Ng5, Black would have a simple answer in 5...d5.
4...fxe4 5.Nxe5?
Somewhat surprisingly, the engines do not flash red at this move - I guess they believe the white position is already wrecked.
5...Nxe5 6.Qh5+ Ng6 7.Qd5
Probably objectively best is 7.Bxg8 Rxg8, but then 8.Qxh7 Kf7 leaves White down a bishop for a pawn, and with an awkwardly placed queen.
7...Qe7 8.0-0 Nf6 9.Qb5 c6 10.Qb3 d5 11.Be2 Bg4 12.Bxg4 Nxg4 13.d3 Qe5
Black is winning comfortably. I include the rest mainly because there is a pretty finish.
14.g3 Qh5 15.h4 0-0-0
I rejected 15...Bxh4!? 16.gxh4 Qxh4 because of 17.Bf4, but both 17...Bc5 and 17...0-0-0 win fairly easily.
16.Bg5 Nxh4!? 17.gxh4 Ne5 18.Nd2
Black to play and mate-in-seven
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18...Qg4+
Also mating in seven is 18...Nf3+.
19.Kh2 Nf3+
And here an alternative solution starts 19...Bd6.
20.Nxf3 Bxd6+ 21.Ne5
21.Bf4 delays the mate by a move.
21...Bxf5+ 22.f4 exf3+ 0-1

Tuesday, 1 June 2021

Beat The ... Ponziani

IN this series I am looking at the statistically best way to play against popular opening lines.
The numbers are drawn from the 2021 edition of ChessBase's Mega database, ignoring, where possible, those results that include very few games and so are statistically insignificant.

The Ponziani: 1.e4 e5 2.Nf3 Nc6 3.c3 has a doubtful theoretical reputation, but Magnus Carlsen is among those who have played the opening and it has a dedicated following at club level.
Black's most-popular reply, 3...Nf6, scores 44%, but this is well-beaten by the 52% for 3...d5.
Position after 3...d5
White has four reasonably popular continuations.

A) 4.Qa4 (1,363 games)
After 4...Nf6!? (other moves are much more popular but cannot compete with ...Nf6's score of 57%) 5.Nxe5 Bd6 6.Nxc6 bxc6 7.d3 (7.Qxc6+?! Bd7 gives Black huge compensation for being, temporarily, two pawns down) 0-0 8.Be2 Re8 the line splits.
A1 9.Nd2 Bg4 scores 75% for Black, albeit from a small sample.
A2 9.Bg5 Rb8 scores 100% for Black, albeit from a very small sample.

B) 4.Bb5 (453 games)
After 4...dxe4 5.Nxe5 Qg5!? the line splits.
B1 6.Qa4 Qxg2, after which the line splits again.
B1.1 7.Bxc6+ bxc6 8.Qxc6+ Kd8!? 9.Rf1 (9.Nxf7+? Ke7 10.Qxc7+ Ke8 11.Rf1 Bh3 12.Qc4 Rc8) Bh3 10.Qxa8+ Ke7 11.Kd1 Qxf1+ 12.Kc2 Bf5 scores 95% for Black, albeit from a small sample.
B1.2 7.Rf1 Bh3 scores 93% for Black, albeit from a small sample.
B2 6.d4 Qxg2 7.Rf1 Bd6 scores 79% for Black, albeit from a small sample.

C) 4.exd5 (158 games)
After 4...Qxd5 the line splits.
C1 5.d3 Bg4 6.Be2 0-0-0 scores 93% for Black.
C2 5.d4 Bg4 6.Be2 0-0-0, after which the line splits again.
C2.1 7.Be3 e4 8.Nfd2 Bxe2 9.Qxe2 f5 scores 83% for Black, albeit from a small sample.
C2.2 7.c4 Qe4, when C2.2a 8.Nbd2 Bb4 scores 87% for Black, albeit from a small sample, and C2.2b 8.Nc3 Bb4 scores 80% for Black, albeit from a small sample.
C2.3 7.dxe5 Qxd1+ 8.Kxd1 Nxe5 12.0-0 Nxf3 13.Bxf3 Bxf3 scores 64% for Black, albeit from a small sample.
C3 5.c4 Qd8 6.Nc3 Nf6 scores 100% for Black, albeit from a small sample.

D) 4.d3 (96 games)
After 4...dxe4 5.dxe4 Qxd1+ 6.Kxd1 Nf6 7.Bd3 Bc5 Black scores 83%, albeit from a very small sample.

Sunday, 5 April 2020

New Spice

NONE of us has much idea when normal over-the-board chess activities will resume.
Some people are trying to make up for this by playing online more, but it is not the same thing.
A lot of players will, I am sure, be using their enforced absence from the board as an opportunity to spruce-up opening repertoires.
Now is a good time to remove some of the stodge and try to inject new spice into our favourite lines.
On the other hand, if we have managed to last this long without theory-laden sharp lines, why change now?
As a compromise, I am planning to put forward a number of sharp lines, often gambits, but lines which, while respectable, do not require memorising loads of theory.
For example, after 1.e4 e5 it is all-too-easy to suggest 2.f4. That would certainly add spice to most repertoires, but it requires a detailed theoretical knowledge.
Similarly, after 1.e4 e5 2.Nf3 Nc6 it is a simple matter to suggest continuing 3.d4 exd4 4.Bc4 - the Scotch Gambit.
But the Scotch Gambit has been deeply analysed for literally hundreds of years.
So instead, in part one of this series, I am starting with the Göring Gambit: 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3!?
It is named after German master Carl Göring, although authors vary as to why, with some saying he introduced the line into master play, although the date of this varies.
In fact the gambit was played back in the 1840s by Howard Staunton, whose lead was followed in the 1850s by Alexander Meek and in the 1860s by Louis Paulsen and Albert Merian.
Other masters also experimented with it before the first known outings, largely unsuccessful, in the 1870s by Göring.
Be that as it may, the gambit's heyday came, long after those masters were dead, in the late 1950s and 1960s when it notched wins for the likes of Tal, Gufeld, Velimirović, Ribli, Ljubojević and, in Britain, Penrose and Levy.
The commonest response to the gambit is to accept with 4...dxc3, but Black's best results percentage-wise in ChessBase's 2020 Mega database come when it is declined with 4...d5.
I will also cover the two other main ways of declining the gambit, namely 4...d3 and 4...Nf6.
A) 4...dxc3
When George Botterill wrote Open Gambits (Batsford 1986), he felt obliged to admit he could not describe the Göring as "playable."
That verdict was effectively echoed by Larry Kaufman in The Chess Advantage In Black And White (McKay Chess Library, 2004), who recommended Black accepts the gambit as it "does not give White enough lead in development to fully offset the pawn sacrificed."
But then along came an even stronger author, Viktor Bologan, who in Bologan's Black Weapons In The Open Games (New In Chess, 2014) said he wanted to recommend acceptance but had found a sideline where he "wasn't able to find any advantage for Black."
After 4...dxc3, White can offer a second pawn with 5.Bc4!?, but I want to look at what I think can be called the main line, 5.Nxc3.
Position after 5.Nxc3
In some ways the position reminds me of the Morra Gambit in the Sicilian, except that in the diagram Black has a pawn on c7 instead of e7.
For White this is both good news (Black has less central influence) and bad news (Black is not so far behind in development, as he has opened a diagonal for his dark-square bishop).
From this it can be argued that the Morra is better than the Göring for White in the short term, but White's prospects in the long term are better in the Göring.
Jacob Yuchtman - Mikhail Tal
USSR Championship (Tbilisi) 1959
5...Bb4
Theoreticians are unanimous, as far as I can discover, in recommending this continuation for Black. Indeed Kaufman gives it in The Chess Advantage without comment.
The main alternative is 5...d6, after which 6.Bc4 is obvious and good, and the main line continues 6...Nf6 7.Qb3 Qd7! (7...Qe7 8.0-0 is embarrassing for Black in that the analysis engines Stockfish10 and Komodo10 reckon best now is 8...Qd7).
After 7...Qd7!, Whites overwhelmingly play 8.Ng5, but I am putting forward the calmer choice of the engines, namely 8.Qc2!?
This was played in a game in 2000 by German teenager Leonid Kritz - then a 'mere' 2424, but three years later a grandmaster.
The idea is that White does not need to rush matters. He has four development tempi - the knights, the queen and the light-square bishop - and has more space.
Black effectively only has two development tempi in that, while he has developed three pieces, it will take him an extra tempo to develop his light-square bishop as the c8-h3 diagonal is blocked by the black queen.
So 8.Qc2!? supports the e pawn and takes the string away from ...Na5, which would be an effective answer to 8.0-0.
A natural continuation after 8.Qc2!? is 8...Be7 9.0-0 (Kritz played 9.Bf4?! in his 2000 game and only drew) 0-0 10.Rd1!?, when the engines reckon Black's best is 10...Qe8!?, after which White's compensation is clear for all to see.
6.Bc4 d6 7.0-0
7.Ng5!? is little-played but liked by the engines at least as much as the text.
7...Bxc3
Black usually captures on c3 as soon as the knight is unpinned. Indeed Kaufman reckons Black's most precise move-order is 6...Bxc3+!? 7.bxc3 d6 so as to avoid White playing 7.Qb3, instead of 7.0-0, the idea being to meet ...Bxc3 with Qxc3.
8.bxc3 Nf6
The game reached this position by a different move-order: 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 Bb4 6.Bc4 Nf6 7.0-0 Bxc3 8.bxc3 d6.
Botterill recommended 8...Bg4 9.Qb3 Bxf3 10.Bxf7+ Kf8 11.gxf3 Ne5 12.Bxg8 (Stockfish10 prefers 12.Bd5!?) Rxg8 13.f4 Nf3+ 14.Kg2 Nh4+ 15.Kh1 Qd7. This is a long line but, as Botterill points out, is largely forced. Known continuations are 16.f5 and 16.c4, both aimed at keeping the black queen out of h3. But the engines reckon White can ignore this threat by playing 16.f3!! The point is that 16...Qh3 is met by 17.Rf2, eg 17...b6 18.Qd5 Re8 19.Qh5 h6 20.c4 with a winning attack against the black king. For that reason, instead of 16...Qh3, the engines suggest 16...Qc6, but Black's pieces are uncoordinated, and White is winning (Stockfish10) or at least much better (Komodo10) after 17.Qe6 or 17.Bd2.
9.e5!
Alekhine played 9.Ba3 in a 1919 win over Isakov, but Penrose came unstuck with the same move against Smyslov in 1958. The text was given by Alekhine as an improvement.
9...dxe5
Kaufman recommended 9...Nxe5 10.Nxe5 dxe5, after which the engines reckon best play is 11.Qxd8+ (Kaufman only covers 11.Qb3) Kxd8 12.Bxf7 Kxe7 13.Bb3 Be6 14.c4, as seen in Yuchtman - Semyon Furman, also in the 1959 USSR Championship, but eight rounds later. The position is unclear (Stockfish10 likes Black, but Komodo10 thinks the position is equal). In the game, White's bishop-pair and Black's somewhat-exposed king helped lead to a quick draw, although both sides could easily have played on.
10.Ng5 0-0!?
Black is two pawns up, so Tal offers the exchange to get his king to safety.
11.Ba3 Qxd1 12.Raxd1 Bf5
Not 12...Rd8? 13.Bxf7+ Kh8 14.Bb3 Re8 (best) 15.Nf7+ Kg8 16.Nd6+ etc.
13.Bxf8 Rxf8 14.Rfe1 h6 15.Nf3 Bg4 16.Rb1
The engines give 16.Bb5!? e4 17.Bxc6 bxc6 18.h3 Bh5 19.g4 Bxg4 20.hxg4 exf3 21.Rd3 Nxg4 22.Rxf3 with advantage to White, even though Black has three pawns for the exchange.
16...e4 17.Nd4 Ne5 18.Bf1 c5 19.Nb5 c4?!
The engines reckon White is only slightly better after 19...Rd8.
20.f3 Bxf3!?
Tal must have planned this combination as 20...Be6?! 21.fxe4 leaves White much better.
21.gxf3 Nxf3+ 22.Kf2 Ng4+ 23.Kg3 Nxe1 24.Rxe1 f5 25.Bxc4+
White has emerged from the complications with a bishop for three pawns. The position is unclear, but the engines prefer White.
25...Kh7 26.Be2 Ne5 27.Kf4 Ng6+ 28.Ke3 f4+ 29.Kd4
29.Kxe4?! f3 30.Nxa7 (any bishop move loses the rook) fxe2 31.Rxe2 is at best equal for White.
29...Kh8?
Tal was presumably worried about a possible pin on his knight after later pushing the e pawn, but correct is a move such as 29...Nh4, with equal chances according to the engines. The text is a mistake because it gives the white rook a tempo to get out of the potential skewer on the e file.
30.Rg1 Nh4 31.Kxe4 Re8+ 32.Kd3
Now Black only has two pawns for the bishop, and only one is a passer (1-0, 40 moves).
(To be continued)

Monday, 11 November 2019

Ponzing About - White Replies

REGULAR Ponziani player Ray Kearsley (1624/128) suggests a simple way for White to avoid the sharp variation given in yesterday's post (https://beauchess.blogspot.com/2019/11/more-ponzing-about.html).
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.d4 Nxe4 5.dxe5!?
There are almost 1,200 examples of 5.d5 in ChessBase's 2019 Mega database, and just 31 of the text. Nevertheless 5.dxe5!? is the older continuation, having first been played by Bernhard Horwitz to beat Lionel Kieseritzky in 1846.
5...Bc5
As against 5.d5, Black can immediately target f2.
How should White meet the threat to f2?
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6.Bc4?
This is RK's idea. He played it in Kearsley (1809) - Richard Wiener (2025), Prague B 2009. After 6...0-0? 7.0-0 d5? 8.Bxd5 Nxf2 9.Rf2, White was considerably better (but 0-1, 31 moves).
However, all this is academic as Black has an obvious and major improvement in ...
6...Nxf2
...when RK's suggested …
7.Qd5
… is comfortably met by …
7...Qe7
The position is not completely clear, but White does not seem to have compensation for his missing pawn, and meanwhile e5 is vulnerable.
Going back to the position after 6.Bc4?, it is not surprising the position is good for Black as it is normally reached with White to move, not Black, from a sequence such as 1.e4 Nc6 2.d4 e5 3.Nf3 Nf6 4.dxe5 Nxe4 5.Bc4 Bb4+ 6.c3 Bc5.
The analysis engines Stockfish10 and Komodo10 reckon that, instead of 6.Bc4?, White should try 6.Qd5 or 6.Be3, but in each case they slightly prefer Black.

Sunday, 10 November 2019

More Ponzing About

ROBIN Moss (2269/201) has given me his analysis of what he reckons is a critical line in the Ponziani - a line in which Black sacrifices two, and sometimes even three, pieces.
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6
Black's most popular move. 3...d5 is generally considered sharper but, as we shall see, 3...Nf6 can easily become extremely sharp if White follows the main line.
4.d4 Nxe4 5.d5 Bc5!?
The knight-retreats 5...Ne7 and 5...Nb8 are much more popular in ChessBase's 2019 Mega database, but the text, which seems to have first been played, unsuccessfully, by Ernst Falkbeer in 1855, has been tried by GMs and scores a better percentage for Black.
6.dxc6 Bxf2+
Falkbeer, in a match against Robert Brien, played 6...Nxf2. More than 20 years were to pass before Mikhail Chigorin used the text to beat Eugen von Schmidt, also in a match, in 1879.
7.Ke2
White's king is short of squares and his development is disrupted, but he has a knight for two pawns, and Black's two developed minor pieces are precariously placed.
How should Black proceed?
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7...Bb6!?
More popular is 7...bxc6, which gives Black a third pawn for his missing knight. However, White can reply 8.Qa4, which prevents 8...Ba6+ and at the same time attacks e4. After the further moves 8...f5 9.Nbd2 0-0 10.Nxe4 fxe4 11.Qxe4 d5, White is obliged to offer his queen with 12.Qxe5. However, 12...Re8 13.Qxe8+ Qxe8+ 14.Kxf2 leaves White with rook, bishop and knight for queen and pawn, which has proved very good for White in games such as Jonny Hector (2535) - Peter Heine Nielsen (2420), Tastrup 1992 (1-0, 23 moves).
However, RM recommends the text, which is preferred by the analysis engines Stockfish10 and Komodo10. One point is that not only is Black's dark-square bishop returned to safety, but Black again threatens a knight fork at f2.
8.Qd5 Nf2
Saving the knight while gaining a tempo on the king's rook.
9.Rg1
White has a major alternative in 9.cxb7!? Bxb7 10.Qxb7, when 10...Nxh1 gives Black rook and two pawns for bishop and knight. The position is unclear, but the engines slightly prefer Black.
9...0-0
The only continuation given by RM in his analysis, but the engines also quite like a move that is not in Mega19, 9...dxc6!? The further moves 10.Qxd8+ Kxd8 11.Be3 Ng4 12.Bxb6 give another unclear position in which Black has three pawns for a knight.
10.cxb7 Bxb7 11.Qxb7 Qf6!?
This may be a new idea (the only game to reach this position in Mega19 saw a 2389 play 11...e4).
RM treats this as the critical position for the whole variation, giving four possible continuations for White
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A) 12.Qd5 c6 13.Qd2 Rae8
Black has two pawns for bishop and knight, but Black also has a strong attack that the engines reckon gives full compensation.
B) 12.Na3 e4
The engines continue 13.Nc4 Rab8 14.Qd5 exf3+, slightly favouring Black.
C) 12.Nbd2 e4
This transposes to B) after 13.Nc4.
D) 12.Qa6 Rfe8
The engines at first strongly favour White, but their evaluations sharply change with almost every move in the sequence 13.Na3 Qf5 14.Qc4 Ng4 15.hxg4 Qxg4 16.Kd1 d5!?, when Black is, temporarily, three pieces down for three pawns, but the position is unclear.
There is much to think about here for anyone who plays, or plays against, the Ponziani.

Saturday, 2 November 2019

Ponzing About (conclusions)

SIX world's-best players have tried the Ponziani, and many other very strong GMs have also experimented with it.
Yet even at club level it remains little-played, and so often comes as a surprise.
White can get by without knowing much theory, but if he does know some theory, there is a very good chance he will know more than the opponent.
As I believe the six games in this series show, the Ponziani is above all for tactically minded players.
Perhaps the one downside to it is that, at move three, it is Black who gets to pick the main variation.
In a way this is a bit like the Open Sicilian, where Black gets to choose whether the game will be a Dragon, Najdorf, Scheveningen, Sveshnikov, etc.
At least with the Ponziani, Black's range of choice is much more limited.
Here, by way of inspiration, is the start of a game played by a friend at a tournament in the Czech Republic. I was at the same congress, and have not stopped hearing about it ever since.
Raymond Kearsley (1752) - Evgeny Golcman (2209)
Olomouc Seniors 2014
1.e4 e5 2.Nf3 Nc6 3.c3 d5
Four years earlier, against the same opponent, Golcman played 3...Nf6, and won, thanks to a blunder, in 26 moves. This time he came to the board having, presumably, prepared the sharper 3...d5.
4.Qa4 dxe4!? 5.Nxe5 Qd5 6.Nxc6 bxc6 7.Bc4 Qd6?! 8.0-0
As in the Capablanca game covered in part four of the series, where the MPs played the probably better 7...Bd7, White can also play 8.d3.
8...Be7 9.d3 exd3?!
With the king protected along the e file by a bishop, this looks natural, but is probably a mistake. However, a move such as 9...Nf6, the main choice of Stockfish10 and Komodo10, is no bed of roses as 10.dxe4 leaves White a pawn up, and with the better structure, unless Black wants to go in for 10...Nxe4 11.Rd1, when 11...Qf6 can be met by 12.Bd5! Qxf2+ 13.Kh1, with White winning a piece.
White to make his 10th move
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10.Bf4!
By no means the only good move in the position, but a shocker to meet over the board.
10...Qxf4
10...Qd7!? has been tried, but White is much better after 11.Rd1 (or 11.Bxd3).
11.Qxc6+ Kd8 12.Bb5!
The key move - I told you the Ponziani is for the tactically minded! White protects his light-square bishop and at the same time threatens mate on e8, so Black has no time to save his queen's rook.
12...Nf6 13.Qxa8 Ng4 14.g3 Qh6 15.h4
Black's mating threats are over, but White still has big threats of his own, eg Qd5+, and Bxd3 followed by Bf5, so Black has no time to conjure up new threats. White is completely winning, and did go on to claim the full point, albeit after many adventures.

Friday, 1 November 2019

Ponzing About (part six)

WE come to the final one of the six 'world champions' who have played the Ponziani.
Magnus Carlsen - Pentala Harikrishna
Tata Steel 2013
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6
Four years earlier, in his only other known Ponziani, Harikrishna played the sharper 3...d5, although that was in a rapidplay game.
4.d4 d5!?
Not a popular choice, but Hariskrishna is not the only GM to have played it. The main moves are 4...exd4 and 4...Nxe4.
5.Bb5 exd4 6.e5 Ne4 7.Nxd4 Bd7 8.Bxc6 bxc6 9.0-0 Be7 10.Be3 0-0
Who stands better out of the opening?
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The game has reached a position with interesting imbalances: White has the better pawn-structure, and attacking chances thanks to his kingside majority; Black has the bishop-pair. For what it is worth, Stockfish10 and Komodo10 reckon chances are equal.
11.Nbd2 Nc5!?
Andreas Dückstein - Wolfgang Unzicker, 1970 Olympiad, saw 11...Nxd2 12.Qxd2 c5 with a draw in 29 moves.
12.b4 Nb7
Mihail Marin in ChessBase suggests 12...Nd3!? As he says, it looks provocative, but one point is that 13.N2f3 can be met by 13...Nb2, intending ...Nc4. More promising for White is to ignore the knight for the moment and get on with 13.f4.
13.f4 a5
Black almost certainly cannot just try to defend on the kingside; he must create queenside counterplay.
14.f5!
The Ponziani is for attacking spirits, and this pawn sac is very much in line with that.
14...axb4 15.cxb4 Bxb4 16.Qg4!?
16.f6!? was a major alternative, with the engines divided as to which they prefer.
16...Bc3
The engines suggest 16...Qe8!?, but Stockfish10 gives one possible answer in 17.Ne6!? Bxe6 (this seems better than 17...fxe6 18.f6 Rf7 19.Qxb4 Nd8, when Black is a pawn up but White still has a strong kingside attack) 18.Qxb4 Bc8 19.f6 with continuing complications. Having been shown the game move and given enough time to consider it, the engines come to like it.
17.Rac1 Bxd4 18.Bxd4 Rxa2
Black's bishop-pair has gone while White's kingside majority remains. But Black is two pawns up, although opposite-coloured bishops in the middlegame favour the attacker.
19.e6 f6 20.Nb3
Not just saving the knight from capture, but heading for the c5 outpost.
20...Be8 21.Nc5 Nd6
21...Nxc5?? costs the exchange.
22.Qf3 Qe7 23.Rf2
Trying to swop off Black's most-active piece.
23...Ra5?!
But perhaps simplifying was the way to go. After 23...Rxf2 24.Qxf2 Black is two pawns up but can never break the blockade of his queenside. On the other hand, it is not easy to see how White makes progress either.
24.Nb3 Rb5 25.Bc5 Bh5 26.Qc3 Qe8 27.Qe3
Marin reckons 27.Nd4 gives White the upper hand. He does not give any analysis, but one exciting line runs 27...Ne4 28.Nxb5! Nxc3 29.e7 Rf7 30.Nxc7 Qxe7 31.Bxe7 Rxe7 32.Rxc3 Rxc7, when Black has two pawns for the exchange, but the engines prefer White.
27...Qa8 28.Nd4 Rxc5!?
The engines' choice as they reckon a line such as 28...Ra5 29.Bxd6 cxd6 30.Nxc6 is very good for White who, although a pawn down, has much-better coordinated pieces and a protected passed pawn, while Black's extra pawn is one of a pair of doubled isolanis.
29.Rxc5 Ne4?!
Black regains the exchange but gets a virtually lost position. The engines prefer 29...Nc4!?, although White will win one of the c pawns and so be up the exchange for a pawn.
30.Nxc6 Nxf2 31.Kxf2 Qa2+ 32.Kg3 Re8 33.h3!
The king will be safe on h2, should the need arise, and Carlsen has seen that such a quiet move is possible as Black can undertake nothing active.
33...Qa6 34.Qc3
Care is still required. Most unfortunate would be 34.Nb4?? Qd6+.
34...Be2 35.Rxd5 Bb5 36.Nb4 Qb7 37.Qc5 Ba4 38.Rd7 Qe4 39.Rxc7?
A slip that could have cost him half a point. The engines give 39.Rd4, there being no rush to pick up the c pawn.
39...h5 40.Kh2
Black to play and draw
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40...Kh7?
Missing a difficult chance. 40...Qf4+ seems better than the text, but the engines point out 40...Bb3!!, when the game's 41.Qf2?? simply drops the knight. The first point of the engines' move is to clear the a file so the black rook has two files from which to invade White's position; the second, deeper point, will become clear later. White's best, according to the engines, is 41.Rd7 Qf4+ 42.Kg1 Ra8 43.Qd4 (covering a1 and supporting the white rook so the e pawn can be pushed) Qxf5 44.e7 Re8 45.Rd8 Bf7. This is the second point of 40...Bb3! - White seemingly cannot make progress.
41.Qf2!
Harikrishna must have missed that his move meant White's queen is no longer tied to the knight.
41...Rg8
Or 41...Qxb4 42.Qg3 Qf8 (42..Re7 43.Qg6+ Kg8 44.Rc8+ Re8 45.Rxe8+ Bxe8 46.Qxe8+ Kh7 47.Qxh5+ gives White an easily won queen-and-pawn ending) 43.Rf7 Qh8 44.Qg6+ Kg8 45.Ra7 Bc6 46.Qf7+ Kh7 47.Qh5+ Kg8 48.Qf7+ Kh7 49.Qg6+ Kg8 50.Rc7 Bb5 51.Qf7+ Kh7 52.Rc4! Bxc4 53.Qh5+ Kg8 54.Qxe8+ Kh7 55.Qg6+ Kg8 56.e7 Bb5 57.e8=Q+ Bxe8 58.Qxe8+ Kh7 59.Qxh8+ Kxh8, and the pawn-ending is winning for White, who has more space and lots of reserve tempi. This is a very long line given by the engines, but the vast majority of it is forced. Both players would, I am sure, be capable of calculating it, but they may well have concluded White was winning without getting to the very end.
42.Na6?!
Possibly better is 42.Qf3 Qe5+ 43.g3 Rf8 (43...Qc7?? Qxh5#), when the engines are enthusiastic about 44.Rc4 and 44.Nd5, but in each case White's advantage shrinks, according to the engines, as the lines get deeper.
42...Be8?
Better drawing chances were to be had with 42...Bb5, when the engines cannot decide whether White should play 43.Qg3 or 43.Nc5. In neither case do they come up with a convincing winning line for White.
43.Rc5 Qd3 44.Nb4 Qd6+ 45.Kh1 Qd1+ 46.Qg1 Qd6 47.Nd5 Rf8 48.Qd4 Kh8 49.Rc8 Bc6
Harikrishna resigned without waiting for 50.Nxf6.
In the same tournament, five rounds later, Yifan Hou played the Ponziani against Carlsen. The opening of that game went 3...Nf6 4.d4 exd4 (varying from Harikrishna's 4...d5!?) 5.e5 Nd5 6.Bc4 Nb6 7.Bb3 d5 (7...dxc3!? has been played, but White gets a lot of open lines for his pawn) 8.cxd4 Bg4. Marin, again in ChessBase, says of this position: "[It is] no less consistent than those arising from more popular openings. White has the centre, Black intends to undermine it. Just play according to the basic rules. Maybe the Ponziani should be tried more often?" Carlsen won in 66 moves.

Thursday, 31 October 2019

Ponzing About (part five)

Max Euwe - Abraham Speijer
Netherlands Team Championship 1923-4
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6
Black's most popular reply to the Ponziani, but it scores much less well than the sharper 3...d5. However Speijer had played the latter against Euwe in their match two years earlier, losing a tactical battle that included opposite-side castling.
4.d4 d6!?
Not a particularly common choice, but it has been played by Smyslov and Tal.
5.d5!?
White does not get much from 5.dxe5 dxe5 6.Qxd8+ Nxd8 7.Nxe5 Nxe4, although White went on to win in Saveilly Tartakower - Lajos Steiner, Schlechter Memorial 1923. The main alternative to Euwe's move is 5.Bb5 Bd7 6.0-0, with what looks like a good Spanish.
5...Nb8
More popular is 5...Ne7, when Black can choose a King's Indian set-up with ...g6 and ...Bg7, or continue with …Ng6. However the text was Tigran Petrosian's choice in a win over Alexander Tolush at the 1957 Soviet Championship.
6.Bd3 Nbd7
Petrosian preferred 6...g6, while the main move has come to be 6...Be7.
7.h3!?
I presume this is prophylaxis against a pin by ...Bg4 after ...Nc5.
7...Nc5 8.Bc2 a5
Not 8...Ncxe4?? 9.Bxe4 Nxe4 10.Qa4+.
9.b4 Ncd7
9...Ncxe4!? is very sharp. One line given by Stockfish10 and Komodo10 runs 10.Qe2 Bf5 11.g4 Bg6 12.g5 Be7 13.gxf6 Nxf6, when the engines reckon Black has reasonable compensation for the piece.
10.0-0 g6 11.Be3 Bg7 12.Nbd2 0-0 13.Qc1 b6 14.Re1 Nh5 15.Nf1 Nf4 16.a3 Ba6 17.Qd2 Qe7 18.g3 Nh5 19.Bh6!?
This can be a controversial decision in this type of position. Black's king is weakened by losing its fianchettoed bishop, but White is giving up his better bishop.
19...Bxh6!?
Another controversial decision. There was a lot to be said for leaving White to make the exchange.
20.Qxh6 Qf6 21.Kg2 Qg7 22.Qd2 Bxf1+!?
Black's queenside light squares are weakened by this exchange, but the large number of pawns on the board favours knights, and Speijer may have had hopes of engineering a good-knight-v-bad-bishop ending.
23.Rxf1 f6 24.Qe2 Ra7 25.Qc4 Rc8 26.Rfb1 Nf8 27.Nd2 Rca8 28.Ba4 axb4 29.Bc6 bxc3 30.Bxa8 cxd2 31.Bc6
A tricky imbalance has arisen in which Black has a pair of knights and two pawns for rook and bishop. The engines reckon White is slightly better. Certainly the d2 pawn is unlikely to last long.
31...Qh6 32.Rd1 g5?!
A strange-looking move whose main purpose seems to be to give the f8 knight a square to go to. The engines suggest 32...Qg5 33.a4 f5 with what they reckon is a slight edge for White.
33.Qe2
There is no rush to take the d2 pawn - it cannot be saved.
33...Ng6 34.Qg4 Ng7
Stockfish10 gives 34...Ne7 35.Qe6+  Kf8 36.Bb5 Ng7 37.Qd7 f5 38.exf5 Ngxf5 39.a4 with a large advantage for White. Komodo10 suggests 34...f5!? 35.Qxf5 Nhf4+ 36.Kh2 (36.gxf4?? Nh4+) Ne7 37.Qg4 Nd3 38.Rxd2, when Black is a clear exchange down.
35.Rxd2 Ne7 36.Re2 f5 37.exf5 Qf6 38.a4 h5 39.Qc4 Ngxf5 40.a5?
The engines give 40.Rd1 Nxc6 41.Qxc6, when Black does not have enough for the exchange.
40...Nd4 41.Rb2 Qf3+ 42.Kg1 Qe4 43.Qc1 Nf3+ 44.Kf1 Nf5?
Black had a forced draw with 44...Nxc6 45.Qxc6 (or 45.dxc6) Nh2+ 46.Kg1 Nf3+ etc.
45.Qb1! Qc4+
The sequence 45...Nh2+ 46.Kf1 Nf3+ is no longer a draw because White has 47.Kh1, after which queens are coming off. If 45...Qxb1+, White has 46.Rbxb1! as 46...Nd2+ 47.Kg2 Nxb1 fails to 48.axb6! Rxa1 49.b7.
46.Kg2 N3d4 47.axb6?
The right idea, but the wrong execution. Correct is 47.Ra4 Qc3 and now 48.axb6, eg 48...Rxa4 49.bxc7 Ne7 50.c8=Q+ Nxc8 51.Qg6+ Kh8 52.Qe8+ Kg7 53.Rb7+ and mates.
47...Rxa1 48.Qxa1 Nxc6?
Black has drawing chances after 48...Qd3 and after 48...cxb6.
49.Qa8+ Kh7 50.Qxc6 Qe4+
Or 50...Qxc6 51.dxc6 cxb6 52.c7 Ne7 53.Rxb6 etc.
51.Kh2 Nd4
51...cxb6 52.Qd7+ Kg6 53.Rxb6 Qxd5 54.g4 etc.
52.Qxc7+ Kg8 53.Qc3 Nf3+ 54.Qxf3 Qxf3 55.b7 1-0
The Ponziani seems a good choice for tactical players. Euwe was far more than just a tactician, but he certainly out-calculated Speijer in this encounter.

Wednesday, 30 October 2019

Ponzing About (part four)

José Capablanca - MPs
London 1919
The future world champion played against future prime minister Andrew Bonar Law, who was consulting with two other MPs (I have not been able to discover their names).
1.e4 e5 2.Nf3 Nc6 3.c3 d5
Bonar Law is said to have been a strong amateur (Edward Winter has a fair bit of chess information about him: http://www.chesshistory.com/winter/extra/bonarlaw.html), so it is not surprising the MPs should play what is probably Black's sharpest line.
4.Qa4 dxe4!?
Black has a lot of choice here, eg 4...f6, 4...Bd7, 4...Nf6, but the text is the one move against which White scores a high percentage. Stockfish10 and Komodo10 reckon ...dxe4 is a mistake (they flash red), but engines' early-opening assessments are much less reliable than their middlegame judgments.
5.Nxe5 Qd5 6.Nxc6 bxc6 7.Bc4 Qd7 8.d3!?
Chigorin played 8.0-0 in wins against Steinitz and Bird at London 1899.
8...exd3 9.0-0
9.Bxd3 is also possible as 9...Qxd3? loses the exchange to 10.Qxc6+ etc.
9...Bd6 10.Bg5
The engines much prefer 10.Nd2, which was Ljubojevic's choice in a draw against Karpov at the 1975 Vidmar Memorial.
10...Ne7 11.Nd2 0-0 12.Bd3 f6
Not 12...Bxh2+? 13.Kxh2 Qxd3 14.Bxe7 Re8 15.Nf3 Rxe7? 16.Rad1 (threatening a back-rank mate) Qe2 17.Rfe1.
13.Qc4+ Kh8 14.Be3 a5 15.Bc2 Nf5
If 15...Ba6, then 16.Qh4.
16.Bxf5 Qxf5 17.Qxc6
White has won a pawn but Black has active play.
17...Ba6 18.Rfe1 Rfb8 19.Ne4 Be5 20.Nc5 Bb5
White found a way to defend the b pawn without a) weakening the c pawn by playing b3, or b) playing the passive Rab1.
21.Qf3 Qxf3 22.gxf3 Bc6 23.f4 Bd6 24.b3
White's c pawn cannot easily be attacked in this position, and so is not weak.
24...Rb5 25.Ne6 Rh5
Vigorous play by the MPs. White is still a pawn up, but the bishops are powerful and White has kingside weaknesses.
26.c4 Rh4 27.c5 Rg4+ 28.Kf1
Can you find a good move for Black?
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28...Bb5+?!
Tempting, but wrong. Black wins the exchange, but at too high a cost. It was better to retreat the dark-square bishop.
29.Re2 Bxe2+ 30.Kxe2 Be7 31.Nxc7
White's passed c pawn is very powerful, not least because the black rook at g4 cannot easily get to the queenside to help combat the passer.
31...Rc8 32.Nd5 Bd8
Not 32...Bxc5? 33.Rc1, but the engines much prefer 32...Bf8.
33.Rc1 Rh4 34.c6 Rh5
34...Rxh2 loses a piece to 35.c7.
35.Rc5 Bc7 36.a4 Rxh2?
This loses quickly, but the engines' 36...h6, removing a possible later back-ranker, is met by 37.Rb5, eg 37...Rxh2 38.Nxc7 Rxc7 39.Rc5, followed by Kd3-c4-b5 etc, when White's queenside play is quicker than Black's kingside counterplay, although it is still  a game.
37.Nxc7 Rxc7 38.Rxa5
Possible as 38...Rxc6?? loses to 39.Ra8+.
38...h5 39.Rc5 g6?!
This is slow, but 39...h4 would make no difference to the outcome, eg 40.b4 Rh1 41.b5 Rb1 42.Kf3, when the h pawn is stopped and White wins easily on the queenside.
40.b4 Rh1 41.b5 Rb1 42.a5 h4 43.b6 Rxc6 44.Rxc6 h3 45.a6 h2 46.a7 1-0
Black can queen first, but White is mating, so the MPs resigned.

Tuesday, 29 October 2019

Ponzing About (part three)

Alexander Alekhine - Konstantin Ivakov
Moscow spring championship 1907
1.e4 e5 2.Nf3 Nc6 3.c3 d5
Black's sharpest reply and also, I suspect, the move most Whites hope for as it requires the greatest book knowledge.
4.Qa4
White's most popular response.. Black answers with a set-up favoured by Steinitz.
4...f6 5.Bb5 Ne7 6.exd5 Qxd5 7.0-0 Bd7 8.d4 e4
8...exd4!? 9.cxd4 Ne5! 10.Nc3 Nxf3+ 11.gxf3 Qf5 looks fine for Black, but the position is unclear and the line is not forced, eg White could try 9.Rd1. The text seems to have been first played by Steinitz.
9.Nfd2 f5 10.Nb3 Ne5 11.Nc5 c6 12.Be2 Bc8 13.Be3 b5 14.Qa5?!
Even better may be14.Qc2. The text lets Black win the bishop-pair.
14...Nc4 15.Bxc4 Qxc4
After the counter-intuitive 15...bxc4!, White is only slightly better, according to Stockfish10 and Komodo10. The text allows White an initiative.
16.Nd2 Qd5 17.a4 Ng6 18.f3 Bxc5 19.dxc5 Qd3 20.Bg5?
White is better after 20.Rfe1, eg 20...0-0 21.Rad1 with a continuing initiative.
20...h6?
Natural and best was 20...0-0. The text loses by force.
White to play and win
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21.Nxe4! hxg5?
21...fxe4 is met by 22.Rfd1, so Black should have castled, when the engines' mainline runs 22.Nf2 Qe2 23.Rfe1 Qxb2 24.Be3, with what they reckon is a large, but not yet winning, advantage for White.
22.Nd6+ Kd7 23.Rad1 Qe3+ 24.Kh1 Qf4 25.g3 Qxa4 26.Nxb5+ 1-0

Monday, 28 October 2019

Ponzing About (part two)

Adolf Anderssen - Berthold Suhle
Breslau (now Wroclaw) 1859
1.e4 e5 2.Nf3 Nc6 3.c3 Nf6
When Anderssen had the black pieces against the Ponziani he usually played 3...d5 (including a loss in 1848 to Daniel Harrwitz, who featured in the first part of this series playing against Howard Staunton's Ponziani). Suhle's ...Nf6 is overwhelmingly Black's most popular third move today.
4.d4 Nxe4 5.dxe5?!
Normal is 5.d5.
5...d5?!
White faces more problems after 5...Bc5.
6.Be3 Be7 7.Bb5 0-0 8.Bxc6 bxc6 9.Nbd2 f5 10.Nd4 Qe8 11.f4 Qg6 12.0-0 c5 13.N4f3 h5 14.Re1 h4 15.h3 Rd8 16.Qc2 c4!? 17.Rad1 Bb7 18.b3??
A blunder caused by Anderssen uncharacteristically underestimating tactical threats to his king.
Black to play and win
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18...c5??
Black's idea in playing 16...c4 was to cover the hole at d4 with ...c5, but Suhle misses the win of a piece by 18...d4 19.cxd4 Nxd2 20.Rxd2 Bxf3.
19.Nxe4 fxe4?
White gets the upper hand after this, so Black should have played 29...dxe4.
20.bxc4 Qg3?
Better, although unappetising, was 20...dxc4.
21.Nh2 d4 22.Nf1 Qg6 23.cxd4 cxd4 24.Rxd4 Rxd4 25.Bxd4 (1-0, 35 moves)
Not exactly a well-played game, but indicative of how tactical the Ponziani can be even in the 'quiet' 3...Nf6 lines.

Sunday, 27 October 2019

Ponzing About

WHAT do the following titans of chess have in common: Howard Staunton, Adolf Anderssen, Alexander Alekhine, José Capablanca, Max Euwe and Magnus Carlsen?
The easy answer is that all were world champions or, in the case of the first two, were widely regarded as best in the world, in their heyday, before the title came into general acceptance.
The rather more difficult answer is that all played the Ponziani.
Wikipedia says of the Ponziani: "The opening is now considered inferior to 3.Bb5, the Ruy Lopez, and 3.Bc4, the Italian Game, and is accordingly rarely seen today at any level of play."
This entry could, perhaps, do with updating, not least becasue there are more than 8,000 examples of the Ponziani in ChessBase's 2019 Mega database.
Staunton - Daniel Harrwitz
Match 1846, game 7
1.e4 e5 2.Nf3 Nc3 3.c3 f5!?
Harrwitz, like Staunton, was an enthusiastic proponent of the Ponziani, so it is interesting he should choose this countergambit, which is credited to the 18th century Italian law professor Domenico Ponziani, after whom the whole opening is named. Much more common are 3...Nf6, 3...d5 and 3...d6?!, the last of which is popular with club players who are caught by surprise, and was even played by a world champion, Vassily Smyslov, but is somewhat passive.
4.d4
It is interesting to compare this position with a line of the Schliemann Counterattack in the Spanish, viz 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d4!? (4.Nc3 and 4.d3 are more popular, but 4.d4!? has been played by strong GMs, including Nigel Short).
Ponziani
Schliemann Spanish
At first glance it might be thought more useful for White to have played Bb5 than c3, but theory regards the Ponziani line as better for White than the Schliemann one. It should be noted that the two moves are not trying to achieve the same thing; Bb5 is a developing move that indirectly attacks the black centre, while c3 is primarily aimed at building a white centre, although the natural follow-up d4 also attacks the black centre. As GM Mihail Marin says of 3.c3 in ChessBase: "Maybe not such a bad move after all. White threatens to occupy the centre with d2-d4, just 'a bit' earlier than this happens in the Ruy Lopez (if Black does not interfere with this sweet plan by choosing the Open variation or the Marshall Attack, of course)."
4...fxe4 5.Nxe5 Nf6
5...Qf6!? has been played by Spassky and Pachman.
6.Bb5
More popular is 6.Bg5, but Stockfish10 and Komodo10 prefer the text.
6...a6 7.Bxc6 bxc6 8.Bg5 Rb8 9.b4!?
An unusual but seemingly effective response to Black's pressure down the b file.
9...Bb7?!
This may have been played with the idea of following up with ...d6 to evict the e5 knight, or of allowing ...d5 to protect the e pawn in the event of 10.Nd2. But better seems to be the engines' 9...Be7, when 10.Nd2 can be met by 10...0-0, as 11.Bxf6 gxf6! gives Black a nice game thanks to his bishops and strong centre.
10.Qa4?!
Keeping pressure on c6, but 10.Nd2 either wins the e pawn or, in the event of 10...d5, allows 11.Nb3, when the engines reckon White already has a winning advantage.
10...d5 11.0-0
Not 11.Nxc6? Qd7 12.b5 Bxc6 13.bxc6 Qg4, eg 14.Bxf6 Qxg2 15.Rf1 gxf6, when White's pieces are difficult to coordinate.
11...h6 12.Bh4 Qd6?
The queen is misplaced here. Better was 12...Bd6 (the c6 pawn is still taboo) or first 12...g5 and then ...Bd6.
13.Bg3 Rg8?
Avoiding losing the rook to a discovery (Ng6), but a better way of doing this was 13...Qe6.
14.Nd2 Rc8 15.Nb3 Nd7 16.Na5 Nb6 17.Qc2 Ba8
Black has avoided material loss, but now his king comes under attack.
18.f3 exf3 19.Rxf3 Qe6
Putting the queen on the same open file as the king hardly helps, but Black's game was already beyond saving.
20.Re1 Be7 21.Nexc6 Qxe1+ 22.Bxe1 Bxc6 23.Qg6+ Kd8 24.Nxc6+ 1-0
A massacre for the Ponziani, but early on the play was much more even-handed, and certainly 3...f5!? was not refuted by Staunton. I have a friend who plays the Ponziani every chance he gets, and it is precisely 3...f5!? that  worries him most (although he very rarely has to face it).