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Mar-01-11
 | | perfidious: <Salaskan> Another superb effort on these lines, though White missed it at his first opportunity, was a game Smyslov-Karpov, USSR ch 1970. |
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Sep-29-18 | | lost in space: No blossoms for me this time. Missed the very strong 23. Bh6 |
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Sep-29-18 | | Walter Glattke: 28.-Bxf3 29.gxf3 Rc6 30.Rd7 Re6 31.Bg5+ Kf7 32.Rxe6 Kxe6 33.Rxa7. White has more pawns. |
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Sep-29-18 | | groog: Walter Glattke if 29...Rc6, then 30.Rf4# |
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Sep-29-18 | | stacase: I chose 25.Ng5 instead of 25.Rad1. Dunno, Black is on the run at this point. White's very nasty h6 Bishop keeps Black's Old Boy from going east to guard h7 where White's Knight would be headed and of course that Knight would also want to fork the King and Queen from there. Well anyway, I got the first three moves so I'm pretty happy for a Saturday |
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Sep-29-18 | | Mayankk: I saw 22 Bxf7 but followed it up with the very tempting 23 Qe6+ which unfortunately leads nowhere. I correctly identified that Kxf7 was the only response to Bxf7, despite Black having so many discovered attack options on White Queen, because of the threat of 23 Qxg6+. However I didn’t even look at 23 Bh6 as it is such a silent killer. |
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Sep-29-18 | | malt: Gone for 22.B:f7 K:f7 23.Bh6!
(Δ 24.♕e6#)
23...Qd7 (as 23...Qd6 is exposed to Whites rook) 24.Qc4+ Kf6 25.Rad1 Bd6 26.Qh4+ Kf7 could not see an advantage. |
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Sep-29-18 | | malt: To my previous post,
27.Qf4+ B:f4 28.R:d7+ Re7 29.Re:e7+ N:e7 30.B:f4 |
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Sep-29-18 | | Walter Glattke: I've got a wrong position above. Where is the win after 28.h4!?, not shown, 28.-Bxf3 29.gxf3 Rd8!? 30.Rde4
Rd7 31.Bg5+ wins the quality by 31.Rxg5 32.hxg5+ Kf7 33.f4 Bd8 34.Re6
always Zugzwang, (Bc7 Rf6+) big white advantage. No better moves visible, and no quick mate to show. |
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Sep-29-18 | | Walter Glattke: In the position above, I left a move: 28.-Bxf3 29.gxf3 Kf7 30.Rd7 Rc6 31.Bg5 Re6 32.Rxe6 Kxe6 33.Rxa7, that's what I meant there. |
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Sep-29-18 | | mel gibson: I saw the first move but there's no clear checkmate.
Stockfish 9 says:
22. Bxf7
(22. Bxf7 (♗b3xf7 ♘c6-e5 ♕e4xe5+ ♕c7xe5 ♗f7xe8
♕e5xg5 ♘f3xg5 ♗e7xg5 ♖a1-d1 ♖c8-c7 ♖d1-d6 ♗g5-f6 b2-b4 h5-h4 b4-b5 g6-g5
♖d6-d7+ ♖c7xd7 ♗e8xd7 ♗f6-b2 ♖e1-e2 ♗b2-d4 ♗d7-c6 ♗b7-c8 ♖e2-e7+ ♔g7-f6
♖e7xa7 ♗c8-e6 g2-g3 h4xg3 h2xg3 ♔f6-e5 a3-a4 ♗d4-c3 ♖a7-b7 ♗c3-a5 ♔g1-g2
♗e6-f5 ♔g2-f3 ♗f5-e6 ♖b7-b8 ♔e5-f6 ♖b8-f8+ ♔f6-g7 ♖f8-a8 ♗a5-b4 ♔f3-g2
♗b4-c5 a4-a5 b6xa5 ♖a8xa5 ♗e6-c4 ♔g2-g1 ♗c4-b3) +4.59/38 ) score for White +4.59 depth 38 |
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Sep-29-18 | | mel gibson: From the final position when Black resigns -
Stockfish 9 says:
28. h4 Bxf3
(♗b7xf3 g2xf3 ♔f6-f7 ♖d4-d7 ♖c5-c6
♖d7xa7 ♖c6-e6 ♖e1-e3 ♖e6xe3 ♗h6xe3 ♔f7-e6 ♗e3xb6 ♖e8-b8 ♖a7-a6 ♔e6-d5 b2-b4
♔d5-c4 ♗b6-e3 ♗e7xh4 ♖a6xg6 ♗h4-e7 ♔g1-g2 ♖b8-a8 ♗e3-c1 ♖a8-d8 ♖g6-c6+
♔c4-d5 ♖c6-h6 h5-h4 f3-f4 ♖d8-c8 ♖h6-h5+ ♔d5-c4 ♔g2-h3 ♗e7-f6 ♗c1-e3 ♖c8-b8
♖h5-a5 ♔c4-b3 f4-f5 ♗f6-b2 ♔h3xh4 ♗b2xa3 f5-f6 ♗a3xb4 ♖a5-f5 ♔b3-c4 f6-f7)
-3.50/38 61 1-0
score for Black -3.50 depth 38. |
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Sep-29-18 | | devere: I looked at 22.Bxf7 right away, but I didn't see 23.Bh6!!. This is an elegant combination by the late world champion, and deserves to be more famous. |
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Sep-29-18 | | thegoodanarchist: Tigran knew how to attack! |
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Sep-29-18 | | agb2002: Black threatens Bxg5.
White has Bxf7 and Bh6+. In the case of 22.Bxf7: A) 22... Kxf7 23.Qe6+ Kg7 (23... Kf8 24.Bh6#) 24.Nh4 A.1) 24... Bxg5 25.Qxg6+ Kf8 (25... Kh8 26.Rxe8+ Rxe8 27.Qxe8+ Kg(h)7 28.Qg6+ followed by 29.Qxg5 + - [R+2P vs b]) 26.Qxg5 A.1.a) 26... Qf7 27.Ng6+ Kg7(8) 28.Ne7+ followed by Nxc8 looks good for White [R+2P vs b+n]. A.1.b) 26... Qg7 27.Qxh5 with three pawns for a bishop, unclear. A.2) 24... Ne5 25.Rxe5 Bxg5 26.Qxg6+ Kf8 27.Rf5+ Kf7 28.Rf7+ Kd8 29.Rd1+ and mate in four. B) 22... Bxg5 23.Qxg6+ Kf8 (23... Kh8 24.Qh6#) 24.Qg8#. C) 22... Ne5 23.Qxe5+ Qxe5 24.Rxe5 Kxf7 25.Rxe7+ Rxe7 26.Bxe7 Kxe7 27.Nd1 doesn't look winning in spite of the extra pawn. -----
In the case of 22.Bh6+ Kxh6 23.Bxf7 Rg8 24.Bxg8 Rxg8 White doesn t seem to have enough compensation for the bishop pair. -----
I don't know. I'd probably play 22.Bxf7. |
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Sep-29-18 | | Mendrys: <stacase: I chose 25.Ng5 instead of 25.Rad1. Dunno, Black is on the run at this point.....Well anyway, I got the first three moves so I'm pretty happy for a Saturday> 25. Ng6 is really the stronger move so you did well to find it. |
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Sep-29-18
 | | Jimfromprovidence: I thought for a sec that 23...Bf8 below, answered 23 Bh6, exposing the white queen to attack. click for larger view24 Ng5+ dashed that hope. |
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Sep-29-18 | | cormier:  click for larger viewAnalysis by Houdini 4: d 23 dpa done
1. + / - (0.88): 19...Qd7 20.Bb3 Bf8 21.Bf4 Rxe1+ 22.Rxe1 Re8 23.Rxe8 Qxe8 24.Bd2 Nd8 25.Ng5 h5 26.Nxf7 Nxf7 27.Qf6 Kh7 28.Bc3 Qd7 29.Qxf7+ Qxf7 30.Bxf7 Bg7 31.Bxg7 Kxg7 32.Bc4 Kf6 33.f3 Ke5 34.Kf2 g5 35.Ke3 h4 36.b4 a5 37.b5 Bc8 38.a4 h3 39.g3 Bb7 40.Ba2 Ba8 41.Bb1 2. + / - (0.90): 19...h5 20.Bb3 Bxg5 21.Nxg5 Rxe1+ 22.Rxe1 Kg7 23.Qf4 Qc7 24.Qxf7+ Qxf7 25.Nxf7 Na5 26.Be6 Re8 27.Nd6 Rd8 28.Nxb7 Nxb7 29.Bc4 Na5 30.Bf1 Kf6 31.Re3 Rd1 32.Rf3+ Kg5 33.Rd3 Rb1 34.b4 Nc4 35.g3 Kf5 36.Kg2 Ke6 37.Rc3 |
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Sep-29-18 | | cormier:  click for larger viewAnalysis by Houdini 4
15...Na5 16.dxe6 fxe6 17.Qxd8 Bxd8 18.Nd4 Rc4 19.Ndb5 Be7 20.Nxa7 Bc5 21.Be3 Bxe3 22.Rxe3 Nd5 23.Rg3 Nxc3 24.bxc3 Rd8 25.Rc1 Rf4 26.Rd3 Rxd3 27.Bxd3 Nb3 28.Rd1 Rg4 29.g3 Nc5 30.Nb5 Nxd3 31.Rxd3
+ / = (0.63) Depth: 22 dpa |
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Sep-29-18 | | cormier:  click for larger viewAnalysis by Houdini 4: d 23 dpa
1. = (0.03): 14...g6 15.Bh6 Re8 16.Bb3 Bf8 17.Bxf8 Rxf8 18.Rad1 Ne7 19.Ne5 Ned5 20.f3 Nf4 21.Qd2 N6d5 22.Nxd5 Nxd5 23.Bxd5 Bxd5 24.Rc1 Rxc1 25.Rxc1 f6 26.Ng4 Qd6 27.b4 Kg7 28.b5 f5 29.Ne5 Qxa3 30.h3 Qe7 2. = (0.10): 14...Qc7 15.Bg5 g6 16.Bb3 Ng4 17.Nb5 Qd7 18.h3 Bxg5 19.Nxg5 Nxf2 20.Kxf2 Na5 21.Ba4 a6 22.Nc3 Rxc3 23.bxc3 Qxa4 24.Kg1 Nc4 25.Ne4 Kg7 26.Ra2 Bxe4 27.Rxe4 b5 28.Re1 Qb3 29.Raa1 Rd8 30.a4 b4 31.Rac1 |
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Sep-29-18 | | pdxjjb: Does anyone else think the puzzle should have been white's 20th with the correct answer Bb3? It looks like 19 ... Qc7 really opens the door for Petrosian. Engine sayeth that after this move black is down a piece even with best play. Or is this just too hard, too many moves out to be called a puzzle? |
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Jul-12-19 | | SaitamaSeason2: So often in Isolated Queen's Pawn positions, the critical square is not so much the isolated pawn itself, but rather the square in front of it. |
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Oct-17-21
 | | kingscrusher: A model Isolated Queen Pawn (IQP) game |
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Feb-26-24 | | Gaito: This game was almost flawlessly played by Tigran Petrosian. It is considered a model game on how to play against the isolated queen's pawn. Every serious chess student should know this game by heart! |
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Feb-26-24 | | Gaito:  click for larger viewWHITE TO MOVE
In this position Petrosian played 25.Rad1, a strong and logical move that brings the last White unity into the battle. Nevertheless, the engine (Komodo 13), which is always alert on tactical possibilities, spotted an even stronger move that would have led to a mating attack without having to use the queen's rook: 25.Ng5! (+-) Nd8 26.Qh4 Kf5 27.Qh3+ Kf6 28.Re4 Rc5 29.Qf3+ Rf5 30.Qc3+ Re5 31.Rf4# (see diagram below):
 click for larger view |
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