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| Jun-22-09 | | nfazli: 30. white to play, nice puzzle |
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| Jul-31-11 | | Everett: Yes, a world class finish, white to play move 30.
This is position 83 in Neishtadt's Improve Your Chess Tactics. Recommended! |
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| Aug-19-11 | | LIFE Master AJ: First. |
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| Aug-19-11 | | LIFE Master AJ: Today, anyway. |
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Aug-19-11
 | | dzechiel: White to move (30?). White is up an exchange. "Difficult." Black threatens mate on c2. Black also threatens the bishop on c8. But! I think white has a clever way out of his predicament: 30 Bf5
Blocking the bishop and stopping the mate (at least for now). 30...Bxf5
Yeah, the threat of mate is back on, but black has also weakened his important protection of the back rank, specifically e8. 31 Qc7
Reminds me a lot of Tuesday's position. This move has it all. It attacks the black queen, protects c2 (indirectly) and threatens 32 Qd8+. Capturing doesn't help 31...Qxc7 32 Re8#
There's probably more (an exchange of rooks, etc), but I think the outcome will be the same. OK, time to check. |
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Aug-19-11
 | | Eggman: It took me about a minute to solve this, except that I can't really say I solved it at all, because I missed the idea of 33...Ba4+. |
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| Aug-19-11 | | LIFE Master AJ: In the problem, I got as far as move 32 before I gave up, not realizing that I was on the right track! |
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| Aug-19-11 | | LIFE Master AJ: (I saw the coming Knight check on c4 ... and thought White was losing.) |
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| Aug-19-11 | | mohannagappan: 30.Bf5 Bxf5 31.Qc7 Qxc7 32. Re8++ |
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| Aug-19-11 | | rilkefan: Didn't see ...Bc2+ etc. I was also looking at 31.Qb8+, but ...Nc8 is fine as far as I can tell. |
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Aug-19-11
 | | sevenseaman: On first look, I was eying the Black R on d4 until I noticed the mate
in one on c2. Since White does not have an immediate check to give he
needs to avert the mate threat by Black's Q-B combo on c2, if he is to have any future. 30. Bf5 has some merit in cutting one link of the combo as well as
relieving its guard on e8. If black chooses to take a free B the
combo comes live again.
click for larger viewNow the only move that delays it is Qc7. Its safe. If Black captures Q
Re8# ensues. He may choose to throw in his d4 R+ and follow it up with a
B check. The K cannot go to d2 on a/c of the Nc4+ and a deluge of Checks
that is sure to result in a loss of the game as Black Q will be able to
move away from confrontation with the White Q.The K is forced to c1. 
click for larger viewMy visualization has been stretched to the limit. The only thing I can
now see is that Black has to force an exchange of Qs by withdrawing the B
to a4 in support of his Q with a discovered check.
I need to give up here on a/c of untold pressure. I will summarise before I cut all the tension and take a look. <30. Bf5 Bxf5 31.Qc7 Rxd1+ 32. Kxd1 Bxc2+ 33. Kc1 Ba4+. 34. Qxc6 Bxc6> 
click for larger view
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Aah! Long way to go. Very tough; I do not feel too good and am totally exhausted. |
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| Aug-19-11 | | iywo: How about 31.Qb8+ Nc8 32.Qc7 Rd1+ 33.Kd1 Bc2+ 34.Kd2, a quicker win |
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Aug-19-11
 | | whiteshark: Nowhere near enough. |
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Aug-19-11
 | | M.Hassan: "Difficult" White to play 30.?
White has a Rook for a Knight.
White is one move away from being checkmated on c2. White can on the other hand mate Black by a check on e8. The trouble is that square is guarded by Bishop and Queen. To divert these defending pieces, he can do this:
30.Bf5 Bxf5
31.Qc7
<if 31...Qxc7 32.Re8#>
31.......Rxd1+
32.Kxd1 Bxc2+
33.Kc1 Ba4+
34.Qxc6 Bxc6
35.Re6 Bb5
36.Rxb6
And the game may continue with White's advantage IMO
Another solution would be by pushing c pawn ahead:
30.c3 Rxd1+
31.Rxd1 bxc3
32.Qxc3 Qxc3+
33.bxc3 Nxc8
34.Rxd5 Threatening mate on d8
34......h6
35.Rd8+ Kh7
36.Rxc8 hxg6
This also ends up with White's advantage IMO |
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Aug-19-11
 | | FSR: Gotta go to bed, so I'm not going to analyze this exhaustively. My first thought is that Black's back rank is a little tender, but not <that> tender, since Black's bishop guards e8. And White has mate, and his bishop on c8, hanging. But if White can somehow manage to save all his hanging bacon, he <is> an exchange up. I think the solution may be 30.Bf5! (an attractive triple-purpose move: saving the bishop, guarding the mate, and "tenderizing" e8). Then 30...Rxd1+ (might as well save the hanging rook) 31.Kxd1! (keeping the latent threat on e8) and now if 31...Bxf5 (otherwise Black is materially lost), 32.Qd6! (attacking the queen and knight, and threatening 33.Qf8#) should toast Black. |
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Aug-19-11
| | FSR: Woops! I was on the right track, but forgot about c2. Had to play Qc7! instead of Qd6?? |
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Aug-19-11
| | FSR: Very cool game, I must say. |
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Aug-19-11
 | | Once: Deeply impressive combination. Like most today I saw some of it. But you really need to see to the skewer/pin 35. Re6 to know that you are going to recoup invested material. I most certainly didn't get that far. |
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Aug-19-11
 | | patzer2: <iywo> After <31.Qb8+ Nc8 32.Qc7 Rxd1+ 33.Kxd1> 33...Qd7! 34. Re5! Kg8 35. Qxd7 Bxd7 36. Rxd5  Black still puts up a lot of resistance.White might still win a difficult ending, but the game continuation is stronger and more clearly decisive. |
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Aug-19-11
| | sevenseaman: Today I beat Crafty easily. If you set it up after Black move...29 you see it follow the same defense as in the game up to its move 34. Then it varies with 35...b3. A very sharp move, be careful. The game reduces to R vs B and its easy to separate Black's Q-side pawns. Keep the black K on 8th. In order to guard his connected g and h Ps it cannot move a lot if your R is on 7nth until you are ready. To win against Crafty you just exchange the R for the B at a suitable juncture and promote your Q-side pawns. |
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Aug-19-11
 | | rhickma4: It seems that White has to exploit Black's back rank weakness.
The most obvious attempt is 30.Qf2, but this fails against 30...Rxd1+ and 31...Qxc8.
White cannot capture the N on b6 because of 32...Qxc2#. The key is to deflect both the Black B and the Q
30.Bf5 Bxf5 31.Qb8+ Nc8 32.Qc7 Rxd1+ 33.Kxd1 Bxc2+ 34.Kd2
Black now needs to prevent mate on the back rank, as well as protect the Queen.<p/>I Can't see how that can be done. |
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Aug-19-11
| | sevenseaman: <mohannagappan> You move the Q to c7 in the hope Black takes it. He doesn't and Re8# remains a dream. You will notice if Black fails to give White a check next move, even Qd8 will lead to a quick mate. |
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Aug-19-11
 | | kellmano: This could be a nice example of luck in chess. I could imagine playing the first couple of moves, then thinking it had all gone wrong on .....Ba4+ only to realise: 'wait a minute, I can skewer those minor pieces'. In such a situation I would of course claim that I had seen it all. |
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Aug-19-11
 | | morfishine: Missed it. Sadly, my first candidate was <30.Bf5> but passed on it missing the queen thrust <31.Qc7> and settled on <30.Qf2> hitting <f8> while protecting <c2>. Part of the problem for me was deciding if this was going to be a draw or a win. |
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Aug-19-11
 | | David2009: Khalifman vs Ehlvest, 1985 White 30? Challenging puzzle in which Black threatens ...Qxc2#. White can defend in a number of ways but neither 30.Bf5 (met by Bxf5) or 30.Re8+ (met by
Qxe8 31.Rxd4 Qxc8) looks promising. This leaves 30.Qf2 Rxd1+ (else 31.Rxd4) 31.Rxd1 Qxc8 and White is struggling. 32.Rf1 Nd7 looks fine for Black.
31.Kxd1 Qxc8 32.Rf1 Nd7 leads to similar lines, but White's King is exposed. Time to find out what I have
missed:
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30.Bf4 Bxf4 31.Qc7!! is a lovely sequence. Respect! Puzzle position:
click for larger view
Crafty End Game Trainer link:
http://www.chessvideos.tv/endgame-t...
The ever-resourceful EGT defends as in the game but interposes 35...b3!? to reach
click for larger view
but White has no problems after 36.axb3 Bb5 37.Rxb6 Kg8 38.Kd2 d4 39.Rd6 d3 40.h4 g6 41.Rxd3 Bxd3 42.Kxd3 Kf7 43.Kc4 Ke6 44.Kc5 Kf5 45.Kb6 1-0 |
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