RECEIVED a double-upfloat.
Bernhard Solger (1866) - Spanton (1954)
QGD Exchange
1.d4 d5 2.c4 e6 3.cxd5!?
This is generally regarded as being played a move early for entering the Exchange Variation.
3...exd5 4.Nc3 c6 5.Qc2 g6!?
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This is the point of the previous note - White can hardly prevent Black playing ...Bf5 |
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6.e3 Bf5 7.Bd3 Bxd3 8.Qxd3
With light-square bishops off the board, Black is considered to have no theoretical problems in the QGD Exchange, although naturally there is plenty of scope for play by both sides.
8...Nf6
Stockfish17 and Dragon1 reckon 8...Qg5 9.Kf1!? favours White.
9.Nf3 Nbd7 10.0-0 Bg7 11.b4
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The start of a Minority Attack - how should Black respond? |
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11...b5!?
Apparently a novelty, but a known idea in similar positions. Black gets a chronically backward c pawn, but this can be easily protected in the short run, and masked in the long run by a black knight occupying c4 - and if this knight should be captured, Black will get a protected passed pawn.
Known moves are 11...a6, delaying the Minority Attack, and 11...0-0, preparing to meet 12.b5 by 12...c5!?
12.a4 a6 13.axb5
White can prevent ...Nb6 with 13.a5, but that makes the white bishop an even sorrier sight, and anyway Black can probably manoeuvre a knight to c4 via d6.
13...axb5 14.Rxa8 Qxa8 15.Bb2 0-0
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Now both sides have castled, how would you assess the position? |
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Black has much the better bishop, and b4 is probably weaker than c6. The engines give Black a slight edge.
16.Ra1 Qb7 17.Qb1!? Ra8 18.Ra5?!
The engines do not like this.
18...Nb6
I did not want to give White a passed pawn, but the engines reckon that after 18...Rxa5 19.axb5 the passed but isolated a pawn is more of a weakness than a strength, especially as Black gets a protected passer.
19.Nd2 Bf8 20.Bc1 Bd6?!
This looks aggressive - from d6 the bishop eyes both b4 and h2 - but the bishop is hanging, ie unprotected. The engines reckon 20...Rxa5 21.bxa5 Nc4 gives Black a positionally won game.
21.e4!? dxe4 22.Ncxe4 Nxe4 23.Nxe4 Qe7
The engines prefer 23...Be7 or 23...Nc4.
24.Bd2?!
The engines reckon both 24.Rxa8+ and 24.Bg5 give complete equality.
24...Re8 25.Nxd6 Qxd6 26.Ra6!?
Possibly best is 26.Qd3, but the engines give Black the upper hand.
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How should Black proceed? |
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26...Nd5
This is enough for an edge, but Stockfish17 gives 26...Qxd4! 27.Be3 Qc3! (only now does Dragon1 realise what is going on ) 28.Rxb6 Ra8, with excellent winning chances.
27.g3 Qf6 28.Qd3 h5 29.h4 Qe6 30.Kg2 Kg7 31.Qf3 Rd8 32.Ra7 Rd7 33.Ra8 Qd6 34.Qe2 Re7 35.Qf3 Nxb4?
Winning a pawn, but giving White equality and good practical winning chances. The engines suggest maintaining the pressure with 35...Qe6 or 35...Qd7.
36.Bxb4 Qxb4 37.Qxc6 Qxd4 38.Qc8
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The position is completely equal, according to the engines, but White's control of the back rank, and the vulnerability of the black king, make the position extremely difficult for Black |
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38...Qe4+
Acquiescing in the draw that comes after 38...Kh7!? 39.Qg8+ Kh6 40.Qf8+ Kh7 41.Qxe7 (White can also take a draw with 41.Qg8+ etc) Qd5+ 42.Kh2 Qxa8 43.Qxf7+ was probably more sensible.
39.Kh2
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Black to play and hold the draw |
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39...Kf6!
Everything else loses.
40.Qh8+ Kf5
Another only-move, as 40...Ke6?? lets the white rook into the action with 41.Ra6+.
41.Rb8 Qe5 42.Qc8+
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Black to play and hold the draw |
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42...Re6?
The engines show only 42...Kf6 maintains equality.
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White to play and win |
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43.Qd8
Winning is 43.Rb7!, eg 43...Kf6 44.Qh8+ Kf5 45.Rxf7+ Rf6 46.Qc8+ Qe6 47.Qc2+ Ke5 48.Qc3+ Kf5 49.Qd3+ Qe4 50.Rxf6+ etc.
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Black to play and hold the draw |
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43...Ke4!
Another only-move.
44.Qc8
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Black to play and hold the draw |
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44...Qd5?
The engines show 44...Kd3!? and 44...Kf3!? keep the game completely equal, at least as far as computers are concerned, while 44...Qf5!? may also be good enough.
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White to play and win |
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45.Qc2+
There is no defence to 45.Qc1!, when 46.Qe3+ and 46.f3+!? are just two of several powerful threats.
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Black to play and hold the draw |
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45...Qd3?
Black holds with 45...Kf3!, when 46.Qc3+?? loses to 46...Kxf2, with mate to follow, while a move such as 46.Qb2 can be met by, among other moves, 46...Qc5, eg 47.Rxb5 Qxf2+ 48.Qxf2+ Kxf2, when Black is a pawn up but the position is well-known to be easily drawn by the pawn-down side.
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White to play and win |
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46.Qxd3+?
The vulnerability of the black king is such that the engines show 46.Qc1 and 46.Qb2 win easily, and other moves may also win.
46...Kxd3 47.Rxb5 Re2 48.Kg2
BS made his move, pressed the clock and offered a draw.
48...Re6 49.Rb7 f6!? 50.Kf3 Kd4!?
This does not throw away the draw, but Black is flirting with danger.
51.Kf4 Rc6!?
Ditto here. More sensible is 51...Rf5, which has the bonus of threatening mate in one.
52.Rd7+ Kc5 53.Rg7
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Black to play and hold the draw |
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53...f5??
Black loses a pawn after 53...Kd6 (or 53...Kd5) 54.Rxg6, but 54...Ke6 leaves a position so drawish that the engines agree White's advantage is not worth even a tenth of a pawn.
The game finished:
54.Kg5 Kd4 55.Rxg6 Rc2 56.f4 Ke4 57.Kxh5 Rg2 58.Rg5 Kf3 59.Kg6 Rxg3 60.Rxg3+ Kxg3 61.Kxf5 1-0