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Later Kibitzing> |
Oct-28-16
 | | catlover: Thanks, <Englishman>. In the game you mention, black didn't even take the knight and white still won! |
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| Oct-28-16 | | gofer: There are so many threatening moves; Qe2, Bf4, Bg5 and Rxe7+ - which
one is best?!
<13 Bg5! ...>
13 ... O-O
14 Bxe7 
13 all other moves except f6 Bxe7
<13 ... f6>
<14 Bf4! ...>
Now f6 is taken up by a lousy pawn, suddenly black's defence of Be7
is looking very shakey!
<14 ... Qxf4>
<15 d6! ...>
15 ... O-O
16 Qd5+ Kh8
17 dxe7
Not sure what's next for black, but as castling isn't an option the
king is going to be left in a horrible position.... 
click for larger view~~~
Yepp!!! |
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| Oct-28-16 | | diagonalley: "difficult"(?) ... bordering on fiendish, i would say! <diagonalley>: nul points :-( |
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| Oct-28-16 | | YouRang: Friday 13.?
click for larger view
I considered <13.Bg5>, but only because it develops a piece with attack -- not because I saw any great continuation. In fact, <13...f6> kinda puts the kibosh on white's prospects as far as I could see. So I gave it up and turned on the computer.
Indeed, <13.Bg5> is one of the top engine moves (along with 13.Qe2), and they both evaluate to 0.00. Hardly stunning, but sort of impressive since white is a bishop down. In the <13.Bg5> line, it continues: <13...f6 14.Bf4 Qxf4 15.d6 Kd8> as in the game:
click for larger view
Here, white played <16.Rxe7?>, which is a blunder because of 16...a5! (threat ...Ra6) 17.c4 (coming to rescue Pd6) ...Ra6 18.c5 Rc6!
click for larger view
And white's two advanced pawns will fall anyway, and black keeps the material advantage and is probably winning. White should have played <16.dxe7 Ke8 17.Qh5+ g6 18.Qa5! (threat Qd8#)>. Following this line, white is able to expose black's king enough to force perpetual check and a draw. Black lost this game despite white's <16.Rxe7?> blunder by replying with a worse blunder: <16...b5??> instead of 16.a5! Puzzle-wise, it feels like a bust. |
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| Oct-28-16 | | AlicesKnight: Pretty (I didn't get the right order of moves at all). Shades of the Adams-Torre construct in moves 18 - 21 where Black's Q eventually loses 'focus' and immolates herself. |
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| Oct-28-16 | | patzer2: The computers indicate both 13. Bg5 and 13. Qe2 lead to a level position in our Friday (13. ?) puzzle position. I looked at both and went with 13. Qe2, but I missed the strong follow-up 13...Kd8 14. c4! =. In the game continuation line, Deep Fritz 15 @ 23 depth gives it as equal after 13. Bg5 f6 14.Bf4[] Qxf4[] 15.d6[] Kd8[] 16.dxe7+ Ke8[] 17.Qh5+ g6 18.Qa5 b6 19.Qxb6 Kf7[] 20.Qb3+ Ke8[] 21.Qb6 Kf7[] 22.Qb3+ Ke8[] 23.Qb6 Kf7[] 24.Qb3+ Ke8[] 25.Qb6 Kf7[] 26.Qb3+ Ke8[] 27.Qb6 Kf7[] 28.Qb3+ Ke8[] = (0.00 @ 23 depth). Deep Fritz 15 also finds it level after 13. Qe2 Kd8 14.c4 b6 15.g3 Bf6 16.Bf4 Qb4 17.Bd2 Qd6 18.Bf4 Qb4 19.Bd2 Qd6 20.Bf4 Qb4 21.Bd2 Qd6 22.Bf4 Qb4 23.Bd2 Qd6 24.Bf4 Qb4 25.Bd2 Qd6 26.Bf4 Qb4 27.Bd2 Qd6 28.Bf4 Qb4 = (0.00 @ 23 depth). |
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| Oct-28-16 | | patzer2: Both sides make a mistake in the follow-up to 13. Bg5 =. White's error was 16. Rxe6? which could have allowed Black the advantage with 16...a5 17. c4 Ra6  to  (-0.68 2 31 depth, Stockfish 5). Instead, 16. dxe7+ = holds it level. Black's decisive error was 16...b5? allowing 17. Qd5 Rb8 18. Rae1 (+3.06 @ 23 depth, Houdini 4). Instead, black should have played 16...a5 to . |
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| Oct-28-16 | | wooden nickel: It would be hard for Black to spot the rescue move 16... a5!,
after being startled from White's previous strong attacking moves!
Black to move and hold:
click for larger view |
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| Oct-28-16 | | mel gibson: Good one.
White missed
22 Qa3
mate in 9 - according to DR4 64 bit. |
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Oct-28-16
 | | Willber G: I went for the exchange sac 13.Rxe7+ which, after reading the comments, seems to be the worst suggestion thus far! No, I didn't make it work. |
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| Oct-28-16 | | cunctatorg: Great opening preparation from GM Darmen Sadvakasov's part ... and probably without any Computer back in 1999, at least without any strong one!... |
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Oct-28-16
 | | agb2002: White has a pawn for a bishop.
Black is about to castle.
White has Bg5, Qg4, Qd4, Qh5 and Qe2. The only promising move seems to be 13.Qe2: A) 13... Qxd5 14.Qxe7#.
B) 13... b5 14.Bf4 Qc5 (14... Qb4 15.a3 Qc5 16.b4 wins) 15.d6 O-O 17.dxe7 Re8 18.Rad1 Qb4 19.Qe5 with an extra pawn and a much better position (19... f6 20.Qd5+ and 21.Qxa8). C) 13... O-O 14.Qxe7
C.1) 14... Qxd5 15.Bf4
C.1.a) 15... f6 16.Bd6 Qf7 17.Qxf8+ Qxf8 18.Bxf8 + - [R vs B]. C.1.b) 15... b5 16.Rad1
C.1.b.i) 16... Qxa2 17.Qxf8+ Kxf8 18.Bd6+ Kg8 19.Re8#. C.1.b.ii) 16... Qc6 17.Qxf8+ Kxf8 18.Bd6+ Qxd6 (18... Kg8 19.Re8#) 19.Rxd6 + - [R vs B]. C.1.c) 15... d6 16.Rad1 as in C.1.b.
C.2) 14... Qxe7 15.Rxe7 with an extra pawn and a much better position. D) 13... Kd8 looks more difficult to break. For example, 14.Bf4 Qxf4 15.Qxe7+ Kc7 16.Re4 (perhaps 16.Qc5+ Kb8 15.d6 f6 16.a4, to avoid Qg5-Qb5 and to allow Ra3, is better) 16... Qf6 (16... Qd6 17.Rc4+ wins the queen) 16... Qf6 17.Qc5+ Kb8 (16... Kd8 17.d6 wins due to Qc7#) 18.d6 and the plan Rae1-Re8 seems to be met with Qxb2-Qb5. I don't have time for more. |
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| Oct-28-16 | | hcgflynn: 22. Rxe6 is a small mistake imo. 22. Qa3! kills instantly. |
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| Oct-28-16 | | Pinkerton: A rather easy start. I would have gone 16.de
Black's 16...b5 is a surprise. A pleasant surprise. |
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| Oct-28-16 | | Pinkerton: 22.Qa3 is neat. By that time I was just playing through the game moves. Perhaps that the Saturday puzzle. |
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| Oct-28-16 | | kevin86: The king file attack decides this one. |
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Oct-28-16
 | | gawain: I rarely solve Friday puzzles--and I didn't get this one completely, either-- but on my second go-round with this problem I did spot the maneuver to decoy the queen from the d6 square in order to advance the white pawn. So I am pleased. I wish I had grasped the importance of the preliminary move 13 Bg5 to induce the weakening move ...f6. |
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| Oct-28-16 | | devere: The point of 13.Bg5! is to force Black to weaken his position with 13...f6, so he can't castle after 14.Bf4 Qxf4 15.d6. Best play is then 15...Kd8 16.dxe7+ Ke8 17.Qh5+ g6 18.Qa5 b6! 19.Qxb6 Kf7 20.e8=Q Rxe8 21.Rxe8 Kxe8 22.Re1+ Kf7 23.Qd8 Kg7 24.h3 +2.06 Stockfish 7 depth 44.
click for larger view
It took the fish quite a while to analyze that the position after 18.Qa5 is a likely win for White, not a draw. |
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| Oct-28-16 | | scholes: It was may be more difficult than friday puzzle. Point of Bg5 was to induce f6 so that after Bf4 Qxf4 d6 0-0 white has Qd5+ winning after Rf7 dxe7 any d8Q or Kh8 dxe7 Re8 Qf7 |
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Oct-28-16
| | Willber G: <hcgflynn: 22. Rxe6 is a small mistake imo. 22. Qa3! kills instantly.> I like that. |
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| Oct-28-16 | | mel gibson: < Willber G: <hcgflynn: 22. Rxe6 is a small mistake imo. 22. Qa3! kills instantly.> I like that.>
Yes - & the computer spotted it but
not the human player. |
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| Oct-28-16 | | newzild: I looked at both 13. Bg5 and 13. Qe2, eventually settling on 13. Qe2. I was disappointed to see that the game continued with 13. Bg5, but after reading some of the computer analysis below it turns out that both moves led to an equal position with best play. |
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| Oct-28-16 | | drollere: i chose 13. c4 with threat of 14. c5. if 14. ... Qxc5 then 15. d6. black does not have a lot of development options and no threats in the position. |
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| Oct-29-16 | | saturn2: I saw the main idea: deflecting the black queen by Bf4 and then play d6. Also I considered the intermezzo Bg5 before Bf4 provoking f6. It weakens e6 but as a drawback gives the black king the escape square f7. However I did not see anyghing decisive for white. All in all a non satisfying puzzle for me. |
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| Oct-29-16 | | saturn2: <drollere> 13 c4 Kd8 14 c5 Qxc5 15 d6 Qxd6 |
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Kibitzing
sac: 11.Nd5