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May-24-16
 | | Penguincw: Hmm, Monday's puzzle did not have a queen sac, maybe today. Uh, nope. And therefore, I got the puzzle wrong. :( I went with 19...Qd1+, hoping for 20.Rf1 (which wins a piece, at least), but missed 20.Qg1. But if the c6 pawn weren't there, now that's a game changer. |
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| May-24-16 | | Razgriz: 0/2 for this week. Also went with Qd1+. |
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| May-24-16 | | CHESSTTCAMPS: Black has bishop+knight+pawn for a bishop pair. The slight material advantage is of smaller consequence than white's accessible back rank, which black should exploit immediately with 19... Rxf7! 20.Rxf7 Qd1+ 21.Qg1 (Rf1 Qxf1+ wins a piece) Qd5+ 22.Qg2 Qxf7 winning a piece. |
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May-24-16
 | | al wazir: I got it. However, after 20. Ba3 Qxa3 21. Rxf7 Qxc3 22. Rd1, black has no win by force and it's far from over. White has only {R vs. B+N+P+P, but black's ♙s are weak. Buis played the Blackmar-Diemer gambit *against* Diemer? Is that correct? |
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| May-24-16 | | User not found: *Yawns*. Morning all. I got it! I looked at Qd1 immediately but Rxf7 first does the trick. The knight then has f2 - h3 and that looks good to me. |
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May-24-16
 | | Phony Benoni: <al-wazir> After <19...Rxf7 20.Ba3>:
click for larger viewIt looks like 20...Qd7 or 20...Qe6 hold the extra piece. If 21.Rxx7 Qxf7 22.Qxc6, Black moves the rook and White can't take on a6 without allowing ...Qf3+ followed by mate. |
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May-24-16
| | al wazir: <Phony Benoni>: You're right. I didn't see the mate threat. Thanks. |
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| May-24-16 | | patzer2: <Phony Benoni> Impressive game collections of daily puzzles. They're very helpful. I plan to use the collections to help prepare tactics recognition exercises for my Grandsons. Monday night my Daughter called to tell me my 7-year-old grandson tied for first in a rated quick time tournament (10 minutes plus 3 second increment) with two wins and a draw.
One of his wins was against a teen player who is one of the strongest, if not the strongest, high school player in central Texas. Getting back to this game, it is one of the strongest crushing defeats I've seen of the Blackmar-Diemer Gambit. It's even more impressive that the win was against Diemer himself. The decisive mistake was 13. Qf3? exd4  (-1.63 @ 18 depth). Perhaps White could have improved with the computer recommendation 6. Bg5  (-0.35 @ 37 depth, Stockfish 6). In any event, today's Tuesday solution 19...Rxf7 demonstrates an excellent example of a Queen Fork (double attack) combination. |
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May-24-16
| | al wazir: <patzer2: It's even more impressive that the win was against Diemer himself.> But if the score sheet is right, it wasn't a win against Diemer; Diemer won against his own opening. |
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| May-24-16 | | patzer2: <al wazir> You're right. I stand corrected. Deimer did indeed win this game playing Black against his own opening. This was not the only game where Deimer played Black against this opening. The computer improvement 6. Bg5 was played against Deimer in Bogoljubov vs E J Diemer, 1952, where Deimer as Black appears to have lost a level position on time. |
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| May-24-16 | | stst: Position intrique, not that straight-forward.
The obvious Qd1+ fails at least to Qg1, Black not happy.
The R at corner needs to get to work, as the one on f-file is blocked.
Immediate Re8 fails obviously to QxR. So one stop first, via a R-sac:
19.............Rxf7
20.Rxf7 (or, some prefers RxN, giving Black more fire-power with both R on f and e-files) then Re8 - the desired spot, by design.
Now different scenarios:
(A)
21.Qg1 Qd5+
22.Qg2 Re1#
(B)
21.Bd2 Re2 (the aim, to harass the Q rather)
22.Qf3 Qxd2
23.Qxg4 Rh2+
24.Kg1 Qg2#
(C)
21.Qf3 Ne5 forks R & Q, White heavily wounded... (D)
21.Qh3 Re1+
22.Kg2 Qd5+
23.Rf3 Bf1+ ===> Q lost.
see how it goes!! |
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| May-24-16 | | agb2002: Black has a bishop, a knight and a pawn for the bishop pair. White threatens Bb2 and c4+.
After 19... Rxf7 the light squares around the white king become very weak: A) 20.Rxf7 Qd1+ 21.Qg1 (21.Rf1 Bxf1 wins) 21... Qd5+ wins the rook - + [N+P]. B) 20.Rxg4 Qd1+ 21.Qg1 Qd5+ and mate in two.
C) 20.Ba3 Qxa3 21.Rxf7 (21.Rxg4 Qxc3 - + [B+2P]) 21... Qd7 (21... Qxa3 also looks winning, for example 22.Rxf7 Bc4 23.Qxc6 Bxf7 24.Qxa8+ Kg7 25.Qb7 -25.Qc6 Qb2 wins- 25... Qc5 26.Rd1 Nf2+ wins) C.1) 22.Rxf7 Qxf7 23.Qxc6 Re8
C.1.a) 24.Qxa6 Qf3+ and mate in two.
C.1.b) 24.h3 Bc4 25.Rd1 (25.hxg4 Bd5+ wins; 25.Qc5 Qf3+ 26.Kg1 Qxg3+ and mate next) 25... Nf2+ wins. C.2) 22.Rd4 Qe6 - + [N+P]. |
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| May-24-16 | | diagonalley: solved this after a while... but as it's tuesday, i started looking for something a shade more dramatic... nice puzzle though :-) |
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| May-24-16 | | saturn2: I saw the first move but had another continuation
19..RxBf7
20 RxRf7 Re8 (threatening Re2 and further Rxh2)
21 Qf3 Re1+
22 Kg2 Re2+ and black has a strong attack |
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| May-24-16 | | nisharaj31: Alas, I tried 20...Bc4 threatening the white rook and the queen on the next move. But the game continuation is superior. |
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| May-24-16 | | mistreaver: Tuesday. Black to play. Easy. 19...?
19... Rxf7!
20 Rxf7 Qd1+
21 Qg1 Qd5+
22 Qg2 Qxf7 |
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| May-24-16 | | morfishine: Follow the bouncing ball |
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| May-24-16 | | nalinw: I went for
19. ... Rxf7
20. Rxf7 Bc4
Planning
21. R moves Bd4 winning the queen
but this is not as clean as the solution and White has unpleasant threats like 21. Rxh7+ etc. ....
Half points? |
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May-24-16
| | Phony Benoni: <patzer2> Thanks. But I should acknowledge that your own kibitzing and collections over the years helped me to identify many of the older puzzles. |
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May-24-16
 | | gawain: I did not find this easy at all. Saw that . . .Qe1+ would be important and that black could not reply with Rc1, but I never considered the exact game line and was surprised to see how 20 . . . Qe5 was so decisive. |
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| May-24-16 | | kevin86: Black lends white a rook for piece then takes it back, and keeps the piece. |
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May-24-16
| | gawain: Not Rc1. I meant Rf1. (In case anybody is looking.) |
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May-24-16
 | | scormus: I didn't find this so easy either. I was even wondering if I'd missed a day |
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| May-24-16 | | mel gibson: I was looking for a 3 move checkmate & didn't find one - as there isn't one. |
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| May-24-16 | | King.Arthur.Brazil: I dind't follow the game's moves at all. I agree with 19...Rxf7 20.Rxf7 but now 20... Bc4 (the Rock moves, Bd5 pin the Q and K; any, Bxf7 win the R). For example: a)21. Rf4 - Bd5 22. Re4 Bxe4 23. Qxe4 Nf2+ and win the Q; b) 21. Rf3 Qd1+; c)21.Bf4 (maybe the best) Qc5 and now Black has the R, the Q and the K (with Nf2+ )threatened with no defense for white. |
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Kibitzing
sac: 19...Rxf7