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Later Kibitzing> |
| Apr-26-18 | | dumbgai: Dang, I didn’t calculate all the way to move 64. No credit for me. |
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| Apr-26-18 | | ChessHigherCat: I kept trying to win the Q with knights but it has suddenly dawned upon (or "beknighted") me that the first move is probably 23. Ncd6 to force Nxd6 (or else sac the exchange with Rxd6) followed by 24. Nf6+! with the immediate threat of Qh7#. So gxf6 is forced 25. exf6 Ng6 and now 26. Qe2 Nf5 (prophylactic protection of g7) 27. Qxh5 and maybe Qxc4 and 28. g4 (that's as far, and probably further than I can do it my head at this hour). Let's see wuz wut. |
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| Apr-26-18 | | ChessHigherCat: Well I got the first couple moves and then outfoxed myself with an overly ambitious plan. It really was about trapping the queen after all. |
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| Apr-26-18 | | RKnight: The queen "trap" 23 Nc3, which costs a N and R is not a clear win, Engine doesn't think so either. But I guess it's best play in this position. |
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Apr-26-18
 | | al wazir: The black ♕ clearly had few safe squares, so I looked first for a way to trap it. And missed it.
But I think black should still have been able to draw. After 37. Qe3 c5, white can win a ♙ with 38. Nxc5 Rxc5 39. Qxd4, but now black connects the ♖s with 39...Rfc8, and the position looks blocked: 
click for larger view |
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| Apr-26-18 | | diagonalley: <al wazir> ... me too (as usual!) |
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| Apr-26-18 | | agb2002: Black threatens Nxd4 and Nxh4.
The black queen looks nearly trapped. This suggests 23.Ncd6: A) 23... Nxd6 24.Nc3
A.1) 24... Qb(c)4 25.Ra4 wins the queen for a rook and a knight. A.2) 24... Nef5 25.Nxb5 (25.exd6 Qb4) 25... Nxb5 26.Qxc6 wins decisive material. B) 23... Qb4 24.Ra4 Nxd4 25.Rxd4 wins decisive material. C) 23... Qd5 24.Nc3 Nxd4 25.Nxd5 Nxc2 26.Nxe7+ Kh7 27.Ra6 wins decisive material. |
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| Apr-26-18 | | patzer2: I could see White's Queen was nearly trapped, but it took me a while to find 23. Ncd6 Nxd6 24. Nc3 ± (+1.25 @ 36 ply, Stockfish 9 analysis of move 23.?) and exploit this weakness. If 23...Qd5, then 24. Nc3 +- (+2.46 @ 23 ply, Stockfish 9 analysis of move 24...?) looks to be decisive. |
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| Apr-26-18 | | patzer2: Black's mistake appears to be the recapture 22...axb6?, which allows today's Thursday puzzle solution 23. Ncd6 ± to +-. Instead, 22...Nxd4 gives Black good practical counter chances at stealing the initiative. It (i.e. 22...Nxd4) also forces White to find many difficult moves, starting with 23. Qd3 = to ⩲ (+0.20 @ 33 ply, Stockfish 9 analysis of move 22...?), just to hold the balance slightly in his favor. |
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| Apr-26-18 | | whiteshark: <al wazir: ... But I think black should still have been able to draw. After 37. Qe3 c5, white can win a ♙ with ...> After <37.Qe3 c5> white can also switch for the kingside and go after black's ♔ with <38.Qg5> 
click for larger view b e.g. <38...Ra8 39.Nf6+ Kf8 40.Nxh5 g6 41.Nf6> 
click for larger viewNothing decisive after e.g. <41...Nc6 42.Qh6+ Ke7 43.Qe3 Raa2 44.Ne4>, but all a worthy alternative to think of. |
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| Apr-26-18 | | ndg2: What's wrong with 22.Nc3 Qxc4 23.Ra4? Doesnt that ein the same amount of Material? |
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| Apr-26-18 | | newzild: <ndg2>
Unfortunately, the Black queen can escape with 23...Qa6. |
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| Apr-26-18 | | latebishop: I also thought that 22. Nc3 Qxc4 23.Ra4 wins but unfortunately 23...Nxd4 complicates things. |
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| Apr-26-18 | | saturn2: Saw this one. 23 Ncd6 and the two subsequent moves catch the black queen at the price of N+R |
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| Apr-26-18 | | mel gibson: I didn't know what to play.
Stockfish 9 follows the same line
but gives less than a 1 pawn advantage.
23. Ncd6
(23. Ncd6 (♘c4-d6 ♘f5xd6 ♘e4-c3
♕b5-b4 ♖a1-a4 ♕b4xa4 ♘c3xa4 ♘d6-f5 ♘a4xb6 ♘f5xh4 ♖d1-d3 ♘h4-f5 ♕c2-d2
♖f8-e8 g2-g3 ♖d8-b8 ♘b6-d7 ♖b8-d8 ♘d7-c5 ♖d8-d5 ♘c5-e4 ♖e8-d8 ♕d2-g5 ♖d5xd4
♖d3xd4 ♖d8xd4 ♘e4-f6+ ♔g8-f8 ♘f6-h7+ ♔f8-e8 ♕g5xh5 ♘e7-g6 ♘h7-g5 ♔e8-e7
♕h5-e2 ♖d4-d5 ♘g5-f3 c6-c5 ♕e2-a6 ♘g6xe5 ♘f3xe5 ♖d5xe5) +0.81/33 163) score for White +0.81 depth 33 |
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| Apr-26-18 | | malt: Gathered todays POTD was to trap the Queen.
23.Ncd6 N:d6 (23...Qd5 24.Nc3 R:d6 25.N:d5 R:d5 )24.Nc3 Qc4 25 Ra4 |
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| Apr-26-18 | | malt: Missed
23...Qd5 24.Nc3 N:d4 25.N:d5 N:c2
26.N:e7+ Kh7 27.Rac1 Nb4 28.N:c6 |
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| Apr-26-18 | | njchess: I got the queen trap, but I wasn't sure that was a winning strategy given the material exchange and the resulting position. I thought Black should be able to hide behind his pawns, apply pressure to White's queen, while keeping his knight's out of harms way. I was wrong. |
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| Apr-26-18 | | saturn2: I played over the game now. 34 Qb3 seems a serious mistake. |
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| Apr-26-18 | | Reisswolf: I don't think it was a good puzzle. I got the general idea, but I feel that a good puzzle should have a more forcing continuation. |
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| Apr-26-18 | | messachess: Tough one. |
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| Apr-26-18 | | swclark25: <saturn2> 34.Qd3 also looked odd to me. What would you think better? 34.Qxc6 or exchange Knights with 34.Nxc3 ? |
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| Apr-26-18 | | cormier: 
click for larger viewAnalysis by Houdini 4
16...f6 17.Be3 Rd8 18.Qd3 Nb4 19.Qb3 Nd5 20.Qd3
= (0.00) Depth: 22 dpa |
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| Apr-26-18 | | mel gibson: < Reisswolf: I don't think it was a good puzzle. I got the general idea, but I feel that a good puzzle should have a more forcing continuation.> Yes a gain of less than a pawn in 33 plies is hardly a chess puzzle. |
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| Apr-26-18 | | lost in space: missed this |
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Kibitzing
sac: 23.Ncd6