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Later Kibitzing> |
Feb-08-17
 | | Rafaelvleite: Wesley So! take care Carlsen, the best GM rarely hold to move 30 against him. |
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| Dec-21-17 | | Cheapo by the Dozen: I would have played the game move over the board, but it would have been speculative rather than calculated to a decisive end, as I don't see a hard refutation to ... Qh5. 18 Rg3 Qh5
19 Bd1 Qd5
for example, requires White to either spend a tempo or else exchange bishops (via B3) to deal with the mate threat at g2. |
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| Dec-21-17 | | Patriot: I knew 18...Nf5 was a bad idea due to the game line but wondered what would've happened on 18...Qh5? I think the answer is 19.Bg5 followed by 20.Bd1. There is also 18...f6 or 18...h6.
Not an easy "queen trap" problem in my opinion. And that is the only theme I could see in this from the start. |
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| Dec-21-17 | | Patriot: Perhaps on 18...f6, white plays 19.Rh3 Qg4 20.f3 Qf5 21.Qd2 Qg5 22.Qf2! and it looks to be over. |
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| Dec-21-17 | | claudi: 19...Qe4 was the best move |
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| Dec-21-17 | | goodevans: <RookFile: We've all made mistakes. Naka won't make this ....Bxh4 mistake again, I'm sure.> Nothing particularly wrong with <15...Bxh4>. The mistake was <17...Ne7> closing the door on his Q's escape route. |
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| Dec-21-17 | | WorstPlayerEver: Cheap trix |
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| Dec-21-17 | | iking: nice cooking pot Wesley .. you trapped Nakamura's queen so early ... |
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| Dec-21-17 | | cocker: 18 ... h6 would have kept Black in the game. |
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| Dec-21-17 | | Cheapo by the Dozen: <Patriot> saw what I overlooked. Thanks! |
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| Dec-21-17 | | patzer2: For today's Thursday (18. ?) puzzle, I missed the solution and game continuation 18. Rg3! +- to ± (+1.94 @ 34 ply, Stockfish 8). Instead, I went for the weaker second best move 18. Rh3 which fizzles out to a level position after 18...Qf6 19. Bh6 Rfe8 20. Re1 Nf5 21. Bf4 (+0.00 @ 34 ply, Stockfish 8). White's 18. Rg3! wins decisive material due to the threat of a Queen trap, as occurred in the actual game after 18...Nf5 19. Bg5 Qh5 20. Bd1 Nxg3 21. Qxg3 +- (+5.20 @ 30 ply, Stockfish 8). Instead of 18...Nf5, Black could have put up more resistance with 18...h6 when White wins back a pawn with a strong advantage after 19. Rh3 Qg4 20. Qf1 Be4 21. Bd1 Qf5 22. Bxh6 Rfe8 23. Qe2! (threatening to win the Bishop with 24. g4 followed by 25. f3) 23...Bd5 24. Ba4 Qe4 25. Qxe4 Bxe4 26. Bxe8 +- (+2.13 @ 34 ply, Stockfish 8). Seeing as how it was a blitz game, Black could have prolonged the outcome with 19...Qe4 20. Qxe4 Bxe4 21. Bxe4 Nxg3 22. Bxa8 Ne2+ 23. Kf1 Nxc3 24. Bf3 f6 25. Bd2 +- (+2.62 @ 34 ply, Stockfish 8). P.S.: Black's decisive mistake was 17...Ne7?, allowing 18. Rg3! ± to +-. Instead, 17...Qd8 ⩱ (-0.50 @ 32 ply, Stockfish 8) holds the position with advantage. |
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| Dec-21-17 | | malt: 18.Rg3 (Threatening 19.Bg5)18...h6
19.Rh3 Qf6 20.B:h6
(19...Qg4 20.f3 Qf5 21.Qd2 Qg5
22.Qe1 Qf6/Qa5 23.B:h6) |
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| Dec-21-17 | | agb2002: White has the bishop pair for a bishop, a knight and a pawn. Black is about to play Nf5, improving the position. The black queen lacks mobility. This suggests 18.Rg3, threatening Bg5: A) 18... f6 19.Qe2
A.1) 19... Bd5 20.Rh3 traps the queen.
A.2) 19... Qh5 20.Qxh5 wins the queen.
A.3) 19... f5 20.Bg5 Qh5 21.Qxh5 gxh5 22.Bxe7+ Kh8 23.Bxf8 wins a whole rook. A.4) 19... h5 20.Qxe6+
A.2.a) 20... Rf7 21.Bxg6 Nxg6 22.Rxg6+ Kf8 (else 23.Qxf7) 23.Bh6+ Bg7 24.Bxg7#. A.2.b) 20... Kh8 21.Rh3 traps the queen (21... Qg4 22.Qxg4). A.2.c) 20... Kg7 21.Qxe7+ Rf7 22.Rxg6+ wins.
B) 18... h6 19.Rh3
B.1) 19... Qf6 20.Bxh6 with the double threat Bxf8 and Qg3-Bg5-Qh4 looks very good for White. For example, 20... Rfc8 21.Qg3 Nf5 22.Bxf5 Qxf5 23.Qh4 f6 24.Bg5 Qxg5 25.Qh8+ Kf7 26.Rh7#. B.2) 19... Qg4 20.f3 Qf5 21.Qe3 Qg5 22.Qf2 Qf6 23.Bxh6 with similar ideas, including an eventual Kf2-Rah1. C) 18... Nf5 19.Bg5
C.1) 19... Qh5 20.Bd1 Nxg3 21.Qxg3 (21.Bxh5 Nxh5) traps the queen. C.2) 19... Be4 20.Qxe4 Qxe4 21.Bxe4 Nxg3 22.Bxa8 Ne2+ 23.Kf1 Nxc3 24.Bf3 + - [2B vs n+2p]. |
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| Dec-21-17 | | Autoreparaturwerkbau: It is worth noting that after 21.Qxg3 computer evaluation is at around +5,00 yet black's position is unusually solid. Even after white's best play evaluation practically stays at around +5,00 level for another 20 or so moves which is quite unusual for such a large lead in evaluation. |
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| Dec-21-17 | | WorstPlayerEver: Solid as a Rook |
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| Dec-21-17 | | Olavi: <Bernstein Defense Except Gligoric System> Uh? |
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| Dec-21-17 | | kevin86: White traps the enemy queen. |
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| Dec-21-17 | | wtpy: Usually I solve-- ok try to solve-- puzzle of the day while I have my morning coffee. Today I kept trying to make Re5 work but it just doesn't because of Nc6. So I went to the gym and when I came back found Rg3 pretty quickly. My streak stays alive! |
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| Dec-21-17 | | wtpy: Nakamura had to go with 19.. h6 though So would have had serious attacking chances but he would have stayed in game and anything can happen in blitz. |
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| Dec-21-17 | | Great Bear: Se7 shut the door for the black queen. |
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| Dec-21-17 | | eblunt: Isn't 19 .... Qe4 better for black ? |
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Dec-21-17
| | ajk68: 19...Qe4 20. Qxe4 Bxe4 21. Bxe4 Nxg3
22. Bxa8! not 22. fxg3
Capturing the knight, although probably winning is a much harder road to travel. |
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| Dec-21-17 | | RKnight: In the game line, why not 20...Qe4, 21 Qxe4 Bxe4, 22 Bxe4 Nxg3, 23 fxg3 Rxc3. This must be close to equality as white has 2 B's for R & 2p's, and white's pawns are weak. |
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| Dec-21-17 | | mel gibson: The computer is giving only
a 1 pawn advantage to White:
18. Rg3 (18. Rg3 (♖e3-g3 h7-h6
♖g3-h3 ♕h4-g4 f2-f3 ♕g4-f5 ♗c1xh6 ♕f5xd3 ♗c2xd3 ♖f8-e8 ♔g1-f2 f7-f6 ♗h6-f4
♔g8-g7 ♖a1-e1 ♖a8-d8 g2-g4 e6-e5 ♗f4-h6+ ♔g7-f7 ♗h6-c1 ♖e8-g8 g4-g5 ♖g8-h8
♖h3xh8 ♖d8xh8 g5xf6 ♔f7xf6 ♖e1xe5 ♘e7-f5 ♗d3-e4) +1.15/21 174) score for White +1.15 depth 21 |
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| Dec-21-17 | | ChessHigherCat: I quickly saw that it might be possible to trap the Q, so I thought that must be the theme of the puzzle. I looked at 18. Re5 to support Be5, but that was thwarted by Nf5, so I opted for supporting the bishop with Rg3 instead. Then I saw the Q would be forced to h5 and my only (rather lame) excuse for missing 20. Bd1 is that I was doing the puzzle in my head. That said, even if I had foreseen the entire game line I might have decided that trading the Q for R+B is not exactly the type of crushing advantage you'd expect from a puzzle. |
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Kibitzing
sac: 20.Bd1