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| May-05-18 | | patzer2: Today's fairly obvious first move solution to today's Saturday puzzle is 28. Re6! +-. The greatest difficulty I have with most weekend puzzles is finding the strongest follow-up moves. However, the follow-up to this combination seems quite logical and straight forward, without too much difficulty. Looking for a tipping point in the game, it appears Black can improve over 23...Bxf5 24. Rxf5 ⩲ (+0.42 @ 23 ply, Stockfish 9 analysis of move 24.?) with 23...b4! 24. Ne4 c4 = (-0.08 @ 22 ply, Stockfish 9 analysis of move 23...?). |
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| May-05-18 | | patzer2: Though both 29. d6! +- and 29. Rxg6+ +- win easily, the computer indicates 29. d6! (Stockfish 9 analysis of move 29.?) is stronger. If nothing else, it's an instructive in-between (a.k.a. zwischenzug or intermezzo) move. |
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| May-05-18 | | Mayankk: I see that there is no consensus yet on the usefulness of d6. Leaving aside the engine analysis, which in any case is mostly beyond recreational players like me, what is the tactical (or strategic) idea behind the pawn push? What is White worried about and is seeking to prevent by playing d6 first instead of an immediate Rook sac on g6? |
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May-05-18
 | | piltdown man: Easy today! |
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| May-05-18 | | RoyalPawn: For me d6 makes sense if you actually not sure about the whole combination on the board, maybe because of time trouble. Left it on d5 , the pawn is attacked twice and defend once. D6 is a forced moved, the queen needs to move, and leaves the pawn protected twice. It doesn’t help for the follow up, but it doesn’t hurt either. |
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| May-05-18 | | mel gibson: Great move - easier than the last 3 days.
Stockfish 9 says:
28. Re6
(28. Re6 (♖e5-e6 ♘b6-c8 ♖e6xd6 ♘c8xd6 ♕e4-e3
♖d8-d7 ♕e3xc5 ♖f8-c8 ♕c5-d4+ ♔g7-h7 ♗c2-d3 ♘d6-e8 ♕d4-b6 ♖d7-d6 ♕b6-b7 ♖c8-c7 ♕b7-b8 ♖c7-e7 a2-a4 b5-b4 ♕b8xb4 ♖e7-d7 ♕b4-a5 ♘e8-f6 ♗d3-c4 ♖d7-a7 b2-b4 ♖a7-d7 f2-f3 g6-g5 ♕a5-c5 ♘f6-h5 ♕c5-e3 ♘h5-f4 h3-h4 f7-f6 g2-g3 ♘f4-g6 ♗c4-d3 g5xh4 g3xh4 ♔h7-g7 ♕e3-e4 ♘g6-f8 ♗d3-c2 ♔g7-f7 ♔g1-f2) +7.97/34 72) score for White +7.97 depth 34 |
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| May-05-18 | | Cheapo by the Dozen: 39 Re7 wins less spectacularly, but is easy to find. |
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| May-05-18 | | SpamIAm: <Mayankk>, I would say that the advantage of 29.d6 is that it takes away an escape square (at e7) from the black king. The gain of tempo by attacking black's queen is an additional bonus. |
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| May-05-18 | | Jambow: Ok didn't get it this time... |
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| May-05-18 | | latebishop: Also 29.d6 prevents Black taking the rook when it gets to g3 with its queen. |
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| May-05-18 | | agb2002: The black castle doesn't have enough defense after 28.Re6: A) 28... fxe6 29.Qxg6+ Kh8 30.Qh7#.
B) 28... Qb8 29.Rxg6+ Kh7 30.Rxh6+ Kxh6 31.Qh7+ Kg5 32.Qg7+ Kh5 (32... Kf4 33.Qf6#; 32... Kh4 33.Qh6#) 33.g4+ Kh4 34.Qh6#. C) 28... Qc7 29.d6 (29.Re7 Qd6)
C.1) 29... Qa7 30.Re7 wins (30... Rd7 31.Qxg6+ Kh8 32.Qh7#). C.2) 29... Qd7 30.Rxg6+ (30.Re7 Qf5 31.Qxf5 gxf5 32.Bxf5 Nc4 33.Ra7 -33.d7 Kf6- seems to win a pawn) C.2.a) 30... fxg6 31.Qxg6+ Kh8 32.Qxh6+ Kg8 33.Rd3 C.2.a.i) 33... Rf7 34.Rg3+ Rg7 35.Qh7+ Kf8 (35... Kf7 36.Rxg7+ wins) 36.Qh8+ Kf7 (36... Rg8 37.Qxg8#) 37.Rxg7+ Ke(f)6 38.Qh6+ followed by 39.Rxd7 wins. C.2.a.ii) 33... Qg7 34.Rg3 Rf7 (34... Qxg3 35.Qh7#; 34... Rd7 35.Qh7+ Kf7 36.Qxg7+ wins) 35.Qh7+ Kf8 36.Rxg7 Rxg7 37.Qh8+ Kf7 (37... Rg8 38.Qf6+ Ke8 39.Qe7#) 38.Qxd8 wins. C.2.b) 30... Kh7 31.Rxh6+ Kxh6 32.Qh7+ Kg5 33.Qg7+ Kh5 (else as in B) 34.g4+ Qxg4+ 35.Qxg4+ Kh6 36.Qh4+ Kg7 37.Qg5+ Kh8 38.Qh6+ Kg8 39.Qh7#. D) 28... f5 29.Rxd6 fxe4 30.Rxb6 wins a piece. |
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| May-05-18 | | morfishine: <28.Re6> |
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| May-05-18 | | malt: 28.Re6 Qc7
(28...fe6 29.Q:g6+ Kh8 30.Qh7# )
29.Rc6 Qb7 30.R:g6+ fg6 31.Q:g6+ Kh8 32.Q:h6+ Kg8 33.Rd3 Rf7 34.Rg3+ Rg7 35.Qh7+ Kf8 36.Qh8+ Ke7 37.Q:g7+ 28...Qb8 29.R:g6+ Kh7 30.R:b6+ f5 31.Qe7+ Kg8 32.Rg6+ |
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| May-05-18 | | gofer: I really liked this one...
It's a "Danse Macabre". By my guess, three moves later Qd6, Pd5, Re5 and Qe4 have all simply moved one square up the board. I think all other
variations are immediately losing for black, so the black queen is forced into the following sequence... <28 Re6 Qc7>
<29 d6 Qd7>
<30 Qe5+ ...>
click for larger viewNow we are at the crunch point, there are only three moves available and two seem horrible for black... 30 ... Kh7
31 Re7 Qc6/Qc8
32 Qf6 +- (threatening Qxg6+ mating)
30 ... f6
31 Re7+ Rf7
31 Qd4! Rxe7 (f5 Qd5+ +-)
32 dxe7 +- (threatening Rxd7, exd8=Q and Qxg6+)
<30 ... Kg8>
<31 Re7 Qc6/Qc8> <32 Bxg6 +->
The threat of Qg3 and Bd4/Bf5 depending on where the black queen is and then the simple rook lift to d3 and then g3 should be all enough to finish black off... 
click for larger view~~~
Hmmm, okay white played <30 Rxg6+> which (with the benefit of seeing the game continuation) seems incredibly strong. But I still
feel that <30 Qe5+> is pretty good - not as strong, but still clearly winning!!! |
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| May-05-18 | | gofer:
click for larger viewI am pretty happy with mate in 14...
1) mated-in-14 (22 ply) 1...Qd7 2.Qf6 Qe6 3.Rxe6 fxe6 4.Qxe6+ Kg7 5.Be4 Rf6 6.Qe7+ Rf7 7.Qxd8 Rd7 8.Qxb6 Kf7 9.Qxc5 Kg7 10.Qe5+ Kf8 11.Bd5 Rxd6 12.Qxd6+ Kg7 13.Qe7+ Kh8 14.Qf8+ Kh7 15.Qg8# 2) mated-in-13 (22 ply) 1...Qe6 2.Rxe6 fxe6 3.Qxe6+ Kg7 4.Be4 Rf6 5.Qe7+ Rf7 6.Qxd8 Rd7 7.Qxb6 c4 8.Qc7 Rxc7 9.dxc7 c3 10.c8=Q cxb2 11.Qb7+ Kf6 12.Rd6+ Ke5 13.Qe7+ Kf4 14.g3# 3) mated-in-14 (21 ply) 1...b4 2.Qf6 Qe6 3.Bxf7+ Qxf7 4.Rxf7 Rxf7 5.Qxd8+ Rf8 6.Qxb6 b3 7.Qxb3+ c4 8.Qxc4+ Kg7 9.d7 Rd8 10.Qc7 Kg6 11.Qxd8 Kf5 12.Rd6 Ke4 13.Qe7+ Kf4 14.Qf6+ Ke4 15.Rd4# |
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| May-05-18 | | anandrulez: <latebishop: Also 29.d6 prevents Black taking the rook when it gets to g3 with its queen.> Yes, thats it. But even if you don't get 29.d6 it is still fine. |
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| May-05-18 | | areknames: <The move 28. Re6 cries out to be made.> Indeed it does. Saw it immediately, and the continuation doesn't appear to be all that hard to calculate. Hardly Saturday standard. |
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| May-05-18 | | lasker27: 28.Re6 was easy to see. I thought that after 28...Qc7 (or 28...Qb7) 29.Re7 would have been faster, as it pins the pawn on f7, with mate in 2, except that black can hold on quite a bit longer after 29...Qxe7, giving up Q for R but it's hopeless in any event. |
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| May-05-18 | | takchess: Not sure how it proceeds but i feel strongly that it starts with rook e6 as a pawn capture leads to mate. |
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| May-05-18 | | Walter Glattke: agb 2002: B) 28.Re6 Qb8 29.Rxg6+ Kh7
30.Rg3+ f5 31.Qe7+ Rf7 32.Qxf7+ Kh8
33.Qg7# one move earlier mate. |
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| May-05-18 | | Marmot PFL: 27...Qd6? runs into 28 Re6! with double attack on the queen and on g6. The threat is 29 Rxg6+ fg6 30 Qxg6+ Kh8 31 Qxh6+ Kg8 32 Rd3 and Rg3+. Black was not so badly off before the move 27 mistake as 27...Rfe8 and 27...Nc8 with the plan of Nd6 are both playable. |
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| May-05-18 | | landshark: After yesterday I felt my chess skills were deteriorating. Now I feel smart again. Like a most of you, I discarded 29.d6 as unnecessary and potentially complicating and went for what I thought was sufficient (and simpler) with Rxg6+.
Point! |
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| May-05-18 | | cormier: May-05-18
Premium Chessgames Member patzer2: .
Black can improve with 23...b4! 24. Ne4 c4 = -0.08 @ 22 ply, Stockfish 9 |
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| May-05-18 | | ChessHigherCat: <Cheapo by the Dozen: 39 Re7 wins less spectacularly, but is easy to find.> I think that's probably the real explanation for d6 but then he changed his mind and went for Rxg6 instead. |
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| May-05-18 | | Granny O Doul: <Patzer2: Looking for a tipping point in the game, it appears Black can improve over 23...Bxf5 24. Rxf5 ⩲ (+0.42 @ 23 ply, Stockfish 9 analysis of move 24.?) with 23...b4! 24. Ne4 c4 = (-0.08 @ 22 ply).> I believe you mean "turning point". The "tipping point" comes when a trend reaches critical mass. |
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Kibitzing
sac: 30.Rxg6+