Tuesday, 23 April 2019

Seven Highlights From Seven Rounds At Southend

MY seven games from the Southend Open over Easter were not without interest, even if some of the 'highlights' are staggering blunders.
Round One
Spanton (1914 Fide/171 ECF) - James Golding (2137/196)
The position is easily recognisable as being from an Exchange Spanish.
White has the better pawn-structure, while Black has the bishop-pair. That is why in the diagram I have just played 13.Be3-f4.
My main analysis engines, Stockfish10 and Komodo9, want Black to play 13...Bxf4!?, when Komodo9 reckons the game is equal but Stockfish10 prefers Black.
Black's alternative is to allow White to capture on d6 after, say, 13...f6 or 13...Ng6, when Black's pawns are undoubled but he gets a backward pawn on the d file.
JG must have been thinking along the latter lines, but his choice of 13...Rfe8?? was met by 14.e5 (1-0, 53 moves)
Round Two
I have already blogged about the ending in Tim Hebbes (2075/186) - Spanton (1914/171): https://beauchess.blogspot.com/2019/04/good-friday.html
Round Three
Black came up with a very interesting positional pawn sacrifice in Spanton (1914/171) - Henrik Stepanyan (2202/212).
White has just played 13.a2-a4
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13...c4!? 14.dxc4 bxa4 15.Rxa4?
I wanted to keep some pressure on Black's passed-but-isolated pawn, but there is no way I am going to be able to bring enough pieces to bear to inconvenience Black. Correct was 15.Bxa4, when the light-square bishop has some activity, with the engines even reckoning White is better.
15...Nb7
This move would have made no sense after 15.Bxa4 as White could solve the problem of his light-square bishop with 16.Bc6.
16.Nd2 Nc5 17.Ra1 Bb7 18.f3 Nh4
Stockfish10 and Komodo9 reckon the position is equal, but I believe most people would much prefer to be Black. In any event the game saw:
19.g4?? Nf4 20.Qh2 Qh4 (0-1, 29 moves)
Round Four
Eddy Barker (no Fide/180) - Spanton (1914/171) was a London System that began 1.d4 d5 2.Bf4 e6 3.Nf3 Bd6 4.Bg3 Nc6!? 5.e3 Nf6 6.Nbd2 Qe7!?
The idea of Black's set-up with 4...Nc6!? and 6...Qe7!? is to take over the centre with a quick ...e5. White should almost certainly challenge this with 7.c4, 7.Bb5 or 7.Ne5. Instead EB played:
7.c3?!
This is Stockfish10's second choice, but the move is surely too passive and, once it has been executed on the board, Stcokfish10 flashes red (meaning mistake), eventually changing to yellow (dubious).
7...e5 8.dxe5 Nxe5 9.Nxe5 Bxe5 10.Nf3!?
I expected 10.Bxe5 Bxe5 11.Nf3, when Black may be slightly better thanks to having more space in the centre.
10...Bxg3 11.hxg3
Who stands better, and why?
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White has a half-open h file, which more than compensates for the doubled g pawns. He also has the slightly better bishop (based on Black having a central pawn fixed on a light square). Black has more space in the centre.
I felt these factors added up to a slight edge for Black. Stockfish10 has Black about three-fifths of a pawn up after 11...0-0!? or 11...h5!?, whereas Komodo9 reckons the position is dead equal (½–½, 35 moves)
Round Five
How would you punctuate Black's last move of 16...d5-d4 in Spanton (1914/171) - Michael Catabay (no Fide/177), and why?
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Objectively Black should have probably got on with development by 16...Be6, when the engines prefer White thanks to White's pressure in the centre. But I would annotate the move MC played as 16...d4!? because it sets a trap that I promptly fell into:
17.cxd4
The engines much prefer White after 17.Ne4! dxe3 18.Bc4+ Kh8 19.Rxd6 exf2+ 20.Nxf2, presumably mainly due to Black's lagging development.
17...cxd4 18.Bc4+ Kh8 19.Bxd4?
White is still better after 19.Bd2 (Stockfish10) or 19.Ne4 (Komodo9).
19...Nxd4 20.Rxd4 Bc5
Black gains the exchange and has good winning chances (but ½–½, 31 moves)
Round Six
White has just played 16.Qd3 in Andrew Talbot (2096/no ECF) - Spanton (1914/171)
White is a (doubled) pawn up but has weaknesses and it is not clear where his king will find safety.
The engines reckon the game is dynamically balanced if Black either castles long or adds to the pressure on the kingside by playing 16...h5.
Instead I hatched a plan for capturing White's e5 pawn by playing …Ra5, but first I wanted to prevent White from interposing his c pawn by replying c5.
16...b6??
Weakening the long light-square diagonal is fatal.
17.Qf3
Not the only move, but good enough for an advantage.
17...Ra5 18.Nd6+??
The correct way to sac the knight was 18.Nf6+, when the more-or-less forced line 18...gxf6 19.exf6 Bxf6 20.Bd2! (attacking Black pieces at a5 and f6 simultaneously) Bg5 21.Qxc6 Bxd2+ 22.Kxd2 leaves White still a pawn up but with a much freer position.
18...cxd6 19.Qxc6 Qxc6??
I rejected 19...dxe5 because of 20.Qxb6??, but that loses to 20...Bd8. So White would have to retreat his dark-square bishop, after which Black is better.
20.Bxc6+ Bd7 21.Bxd7+?
Better is 21.Bd5 as then 21...dxe5? would be bad because of 22.Bxe5 and Black can only avoid going a second pawn down by allowing 22...Bf6 23.Bxf6 gxf6, when Black has multiple weaknesses (as well as still being a pawn down).
21...Kxd7 22.exd6 Bxd6 23.Bxd6 Kxd6
The smoke has cleared and White remains a pawn to the good (1-0, 61 moves)
Round Seven
I was two pawns up from out of the opening in Spanton (1914/171) - Viktor Jamroz (1746/162).
White to make his 16th move
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16.Kb1??
A 'safety-first' move that is anything but.
16...Nc3+ 17.Bxc3 dxc3 18.b3 Nb4 19.a3
The only saving move, but good enough.
19...Nd5 20.Rxd5??
As VJ pointed out afterwards, this exchange sac was completely unnecessary. I should have gone with my other main thought of 20.Rd4.
20...exd5 21.Qd4
Certainly not 21.Qxd5?? as Black replies 21...Be6, with ...Rd1+ to come.
21...Qh6?!
Probably not best, although it works out swimmingly in the game. The engines like 21...Qa5, with an unclear position.
22.Qxc3 Rc8 23.Qd2??
I should have avoided an exchange of queens with 23.Qd3 or 23.Qb4, when the engines prefer White.
23...Qxd2 24.Nxd2 Bf5
I had seen this, but missed the strength of it.
25.Bd3?!
The engines suggest 25.Nf3, but still regard Black as comfortably winning.
25...Bxd3 26.cxd3 Rxg2
White has two pawns for the exchange, but too many of the White pawns are weak (0-1, 48 moves)

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