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| Oct-19-14 | | JG27Pyth: @<weary willy>
I agree 31 is an excellent puzzle. Maybe wednesday and it would frustrate A LOT of us. Anyone's first thought looking at that position as a puzzle is -- mating net. The Q trap with a pawn from the king's wall! That doesn't require great calculation, but excellent board vision and a nimble imagination. |
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Oct-19-14
 | | paulalbert: Be3 to try to lure the black B away from covering the long dark diagonal ( but he cannot be lured ) was the obvious candidate move, so let's see what I've got ( if anything) on 19.... Kxf7 20. Qh7+ ? That the ultimate objective was trapping black's Q by another N fork on g5 rather than f6 was way beyond my calculating vision! |
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Oct-19-14
| | paulalbert: Correction: g6 |
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| Oct-19-14 | | Cheapo by the Dozen: White is down the exchange. His f7 knight is hanging and Black's e6 pawn looks like a weakness, so the obvious thought is N(e4)g5. The second thought is that that move would look a lot better yet if the DSBs weren't on the board, or for that matter just if the h6 bishop weren't blocking Qh7. OK. My move is 19 Be3. Possible lines include:
19 Be3 Bxe3
20 Nf6+ winning the queen.
19 Be3 Kxf7
20 Ng5+ Kg8
21 Bxd4 Rd8
22 Qh8+ Kf7
23 Qg7+ Ke8
24 Qxg6+ Kf8
25 Qf6+ Kg8
26 Qh8+ Kf7
27 Qg7+ Ke8
28 Qg8+ Ke7
29 Qf7+ Kd6
and there surely is a win for White in there somewhere. I'd happily play that over the board, recalculating on the fly as needed. 19 Be3 Kxf7
20 Ng5+ Ke7
21 Qh7+ Kd8
22 Nf7+ soon winning the queen.
19 Be3 Kxf7
20 Ng5+ Kf8
21 Qh6+
and we transpose into something resembling one of the other lines. 19 Be3 Qxf7
20 Bxd4 Kf8 (Black has little choice at this point)
21 Bc5+ Re7
22 Qh8+ Qg8
23 Bxe7+ and White has a major material advantage
19 Be3 Qxf7
20 Bxd4 Kf8
21 Bc5+ Kg8
and to be honest I don't immediately see a win, but a worst-case scenario is that Black plays this 3-move response and I have to repeat moves. If this last scenario is the actual one in the game I'll try to calculate further. |
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| Oct-19-14 | | Cheapo by the Dozen: Hmm. I like my continuation a little better than the game one ... |
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| Oct-19-14 | | Cheapo by the Dozen: Hmm. I like my continuation of 20 Ng5+ a little better than the game one, but nobody else seems to have picked it ... |
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| Oct-19-14 | | diagonalley: <cheapo> .... woooooo ...go to the top of the class |
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| Oct-19-14 | | patzer2: <cheapo> For 20. Ng5+, Fritz 12 gives equality after 20. Ng5+ Kf8! 21. Qf3+ Kg7 22. Bxd4+ Qxd4 23. Qf7+ Kh6 24. Qxe8 Bd7 25. Qe7 Re8 26. Nxe6 Qxf2+ 27. Kxf2 Rxe7 28. Nxc7 Bf5 29. Rc1 Bxd3 30. Ne6 Bf5 31. Nd4 Be4 =. |
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| Oct-19-14 | | patzer2: Had Black seen the Queen trap coming after 29...Qf5 30. Qh6! Nd5 (or almost any other move) 31. g4!  , he might have tried 29...Qg8.After 29...Qg8, White wins with 30. Rc1! when play, as verified by Fritz, might continue 30...c6 31. Bf6+ Kd6 (31... Kf8 32. Qh6+ Qg7 33. Qxg7#) 32. Nf7+ Kd7 (diagram below) 
click for larger viewHere Fritz gives a forced mate after 33. Bxe6+! Kxe6 (diagram below) [33... Kc7 34. Be5#; 33... Rxe6 34. Qxg8 Rxf6 (33...c5 34. d4! yields mate in 11) 35. Qd8+ Ke6 36. Qe8+ Kd5 37. Qe5#] 
click for larger viewFrom this position, it's mate-in-three with 34. Bg7+! Ke7 (34... Kd7 35. Qd6#; 34... Kd5 35. Qd6#)
35. Qd6+ Kxf7 36. Qf6#. |
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| Oct-19-14 | | Cheapo by the Dozen: Thanks, <patzer2>.
My line vs. ... Kf8 overlooked the interposing retreat of ... Bg7, which may be why Fritz went in a different direction. And I'm not find anything strong enough after: 19 Ng5+ Kf8
20 Qh6+ Bg7
21 Bc5+ Re7
despite the initial appeal of moves like 22 Bxe6, 22 Nxe6+ and 22 Qxg6 |
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Oct-19-14
 | | Jimfromprovidence: I really liked the quiet 30 Qh6.
click for larger view Here white threatens 31 Qh4+. The idea is that black cannot respond 31...Kd6 because of 32 Qb4+, the beginning of a forced mate, so black would have to interpose and lose his queen to prevent 32 Qb4+ from occuring. 30...Nd5 protects the b4 square, but then comes the nice finish 31 g4. BTW, if 31...Qf4, then 32 Ng6+. 
click for larger view |
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| Oct-19-14 | | agb2002: White has a knight for a rook.
Black threatens 19... Qxf7.
The first idea that comes to mind is 19.Be3, trying to eliminate or divert the best defender of the black castle: A) 19... Qxf7 20.Bxd4 Kf8 (20... Qh7 21.Nf6+ wins; 20... e5 21.Bxf7+ wins) 21.Bf6 (threatens 22.Qh6+ Kg8 23.Qh8#) 21... Re7 22.Qh8+ Qg8 23.Bxe7+ Kf7 (23... Kxe7 24.Qxg8 + -) 24.Qf6+ + - [B]. B) 19... Kxf7 20.Qh7+
B.1) 20... Kf8 21.Bh6+ Bg7 22.Qh8+ Ke7 (22... Kf7 23.Qxg7#) 23.Qxg7+ Kd8 24.Bg5+ Re7 25.Qf8+ Qe8 26.Bxe7+ Kd7 27.Nc5+ and 28.Qxe8, etc. B.2) 20... Bg7 21.Bh6 Rg8 (21... Kf8 22.Qh8+ transposes to B.1) 22.Bxe6+ B.2.a) 22... Qxe6 23.Ng5+ Kf8 24.Nxe6+ Bxe6 25.Qxg6, unclear [Q+2P vs R+B+N]. B.2.b) 22... Kxe6 23.Qxg8+ Ke5 (23... Qf7 24.Ng5+ wins; 23... Ke7 24.Bg5+ Bf6 25.Bxf6#) 24.Bxg7+ with a winning attack. C) 19... Bxe3 20.fxe3
C.1) 20... Kf8 21.Qh8+ Ke7 22.Qf6+ Kf8 23.Nh6+ Qf7 24.Qxf7#. C.2) 20... Qxf7 21.Rxf7 Kxf7 22.Qh7+ Kf8 23.Ng5 and mate next. D) 19... Bg7 20.Nh6+
D.1) 20... Bxh6 21.Qxh6 with a winning attack (21... Qh7 22.Nf6+). D.2) 20... Kh7(8) 21.Nhg4+ Kg8 22.Ngf6+ wins the queen. D.3) 20... Kf8 21.Qf3+ Ke7 22.Bg5+ Bf6 23.Qxf6#. |
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| Oct-19-14 | | Lord Zontar: This position is a mess. All sorts of bad moves and wrongheaded ideas at work here... Not unsalvageable, though. My idea for move 19 was fNg5. Opens up the f file for White, increases the pressure along the a2-g8 diagonal controlled by White's b3 bishop, leaves the option to manoeuver the e4 knight at discretion or leave him in place to support the g5 position, and helps set up a mating position for White or to force a bad exchange or two upon Black, because Black HAS to see Qf3 coming and if he doesn't, it's all over. At the very least, the initiative will shift back to White, which he desperately needs at this point in the game. |
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| Oct-20-14 | | Lord Zontar: Also: in the actual game, the far stronger 25th move for Nisipeanu would have been Bd4+ - which would really have put the screws on Reinderman, resulting immediately in the loss of his d7 bishop (Qxd7, which also sets up a killer diagonal for White) and, if played right, the loss of the queen down the line and a deteriorating position for Black. |
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| Oct-20-14 | | AnotherNN: It seems to me at Move 15, White could have killed it with 15.B-g7. How would Black have coped with the double threat of either Q-h8 mate or Q-h7 mate?! Might make a nice Tuesday puzzle, I think. |
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| Oct-06-19 | | khense: Surprise - I didn't expect to see Black's Queen trapped. |
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| Oct-06-19 | | Walter Glattke: 24.-Rh8 instead of 24.-Qd6. 19.N3e5 Bxe5 20.Nxe5 Qe7 21.Qg3 Nd5 22.Nxg6 Kf7 23.Ne5+ Kf6 24-Bg5+ and queen lose |
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| Oct-06-19 | | Walter Glattke: No, 19.Ng5 |
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| Oct-06-19 | | trnbg: <AnotherNN> No. After 15. Bg7, Black simply takes the Bishop with the King (15...Kxg7), and after 16. Qh7+ the Black King escapes via f6 and e7. |
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| Oct-06-19 | | 1stboard: Nice puzzle - some pretty fancy stepping moves by white. I agree with < khense > - I did not expect to see Black's Queen trapped in a very unusual way. |
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| Oct-06-19 | | Chesgambit: Be3!! |
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| Oct-06-19 | | thegoodanarchist: 'peanut played well. |
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| Oct-06-19 | | agb2002: Level 3: 13.?
Capablanca vs Masyutin, 1914
click for larger view |
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Oct-06-19
 | | Breunor: Suggested move: 25 Bd4.
Stockfish disagrees and agrees with the game move: 1) +7.35 (23 ply) 25.Bg5+ Kf7 26.Bh6 Rg8 27.Ng5+ Ke8 28.Bxg7 Rxg7 29.Qxg7 Qe7 30.Qxg6+ Kd8 31.Re1 c6 32.Nxe6+ Bxe6 33.Rxe6 Qc5 34.Re8+ Kc7 35.Qf7+ Nd7 36.Qf4+ Kb6 37.Rxa8 Ne5 38.d4 Qc3 39.h4 Nc4 40.Rf8 Ka6 41.g4 Nd2 42.Qe3 Qb4 43.Rf7 Nxb3 44.axb3 Indeed Bd4? loses to Qxd4! After Nxd4 Rh8!
1) -3.98 (25 ply) 25...Qxd4 26.Nxd4 Rh8 27.Qxh8 Bxh8 28.Re1 Bd7 29.Nf3 Ke7 30.Ng5 Re8 31.Bxe6 Kf6 32.Nh7+ Kg7 33.Ng5 Kh6 34.h4 Bf6 35.Re3 Bxg5 36.hxg5+ Kxg5 37.Bxd7 Rxe3 38.fxe3 Nxd7 39.Kf2 b5 40.d4 Nf6 41.Kf3 b4 42.e4 |
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| Oct-06-19 | | patzer2: Must have remembered 19. Be3! from five year ago, because it was my quick pick for a solution to today's Sunday puzzle. P.S.: So where did Black go wrong? The losing move appears to be the tempting but flawed 13...Nd3+? 14. cxd3 +- (+2.38 @ 27 ply, Stockfish 10). Instead, 13...Qd4 14. Bxg7 Kxg7 15. Nd2 ⩲ (+0.52 @ 31 ply, Stockfish 10) keeps Black in the game. |
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Kibitzing
sac: 15.Nd2