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| Nov-30-11 | | leonie: hooray, my first correct solution. |
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| Nov-30-11 | | Patriot: After staying up too late and getting up early, I was lucky to get this at all. 51.Nxf5 looks good, since 51...Qxf5 seems to be the only critical candidate to consider. 52.Rxg3+ hxg3 53.Rxg3+ followed by 54.Qxf5  . |
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| Nov-30-11 | | CHESSTTCAMPS: White has a knight for a bishop (often advantageous in a closed position) and the sounder pawn structure. White's weak pawns on a3 and h3 are difficult to access, while black's weak pawns on c6 and f5 are very vulnerable. Obviously f5 is the juicy target, because it shields the king. 51.Nxf5! is easy to find, and might induce immediate resignation: A) 51... Qxf5 52.Rxg3+ hxg3 53.Rxg3+ Kf7 (Kh7 54.Qxf5+ also wins Re6) 54.Qxf5+ Bf6 55.exf6 and black will be checkmated soon. B) 51... Qh7/h8 52.Nxe7+ wins.
C) 51... Kh7 (or B moves or R moves) 52.Nxg3+ wins Q
D) 51... Kf7 (best, but hopeless) 52.Nxe7 (Ne3 is also strong) Kxe7 (Rxe7 53.Qxc6) 53.f5 Rh6 54.f6+ Kd7 55.e6+! Kc7 (Kxe6 56.Qxc6+ wins) 56.Rbe3 (but not f7? Rxe6 57.f8=Q??? Rxf8 58.Rxf8 Re2+) and the pawns are unstoppable. Time for review.... |
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| Nov-30-11 | | whiteshark: That's great, <leonie>! Keep it up! |
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| Nov-30-11 | | sevenseaman: < Penguincw: Hmm. I was thinking of a knight move but to the wrong square, g4 <taking advantage> of the pin on the f5 P.> I too gave <51. Ng4> a passing thought on account of the pin. But a pin to do what? I saw no obvious targets and overruled the mirage in favor of <51. Nxf5> with targets aplenty. It did not matter too much whether the Q retook or refused, the move did enough damage to Black's survival chances. |
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| Nov-30-11 | | kevin86: I saw the first move,but not much beyond that. |
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| Nov-30-11 | | gofer: Just a thought, but aren't we about due for <spoiler>, it seems quite a while since the last one... |
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| Nov-30-11 | | Marmot PFL: easy puzzle, as the threat 51 Nxf5 is fairly clear and the calculations are simple. |
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Nov-30-11
 | | chrisowen: 51.Nxf5 and tattoos true fetch me the anvil point horse immuned he meld colds opening in tow night I calculate nxf5 qxf5 rxg3 rxg3+ hxg3 rxg3+> mate in twelves but general striken I kit a kf7 curious in it nxe7 tuk in? |
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| Nov-30-11 | | CHESSTTCAMPS: Play the puzzle position against Crafty from the following link: http://www.chessvideos.tv/endgame-t... As always, be careful! |
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Nov-30-11
 | | whittaker: @CHESSTTCAMPS: Wow, tried like five times, couldn't do it. Someone smarter than me, please post the winning continuation. |
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| Nov-30-11 | | M.Hassan: <OhioChessFan: I will agree with MHassan that Rc3 is also winning> YYYYEESSSSS and thanks for your endorsement! |
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Nov-30-11
| | whittaker: Still no luck with this position against Crafty.
After 51. Nxf5 Kf7 52. Nxe7 Rxe7 53. Qxc6, White is up 2 pawns and can win 2 more. But Black can play against the backward a- and f-pawns, and can generate a lot of threats using the PPP on g3, as well as threatening Rook incursions on the c-file and Queen incursions on the d1-h5 and c1-h6 diagonals. I must have tried a dozen different ways, but I can't win this position against Crafty. I even tried sacking one rook for the g3 and h4 pawns, no luck. I also tried 52. Ne3, but that didn't work either. Anybody? Can it really be that this "Easy/Medium" Wednesday puzzle is actually "Impossible"?? |
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| Nov-30-11 | | Dr. J: From the game's final position:
click for larger viewNow 53...Rh6 54 f6+ Kd7 55 e6+ Kc7 and now 56 f7 Queens the pawn. |
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Nov-30-11
 | | OhioChessFan: Here's how Crafty played it.
51. Nxf5 Kf7 52. Nxe7 Rxe7
53. Qxc6 Rf8 54. f5 Kg8 55. f6 Ref7
56. Qxd5 Qh6 57. Rbe3 (Seems to me to be the key move)
click for larger view
57...Qh5 58. Re4 Kh8 59. Rff4 Rh7 60. Rxh4 Qg5
61. Rxh7+ Kxh7 62. Rg4 Qd2+ 63. Kxg3 Qe1+64. Kh2 Qf2+
65. Qg2 Qxg2+ 66. Rxg2 1-0
click for larger view |
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| Nov-30-11 | | Bates79: <Whittaker> It's not impossible, just a deteriorating position for black. I can help you out. 51. Nxf5 Kf7 52. Nxe7 Rxe7 53. Qxc6 Rf8 54. f5 Kg8 55.f6 Ref7 56.Qxd5 Qh6 57. Rbe3 Qh5 58. Qe4 Qh6 59.Rf4 Rh7 |
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Nov-30-11
| | whittaker: Thanks, OCF and Bates79. That's a nice positional squeeze. I didn't take the f5-f6 idea far enough. Did you guys find these moves on your own or did you have Crafty play itself? Either way, it seems like White has to play pretty accurately for 10 moves or so past when the position is assumed to be "won". |
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| Nov-30-11 | | gofer: <whittaker> there are lots of ways to play this, but most hinge on
<54 f5> which both <OhioChessFan> and <Bates79> like, but white
can even play e6 instead of f6 and still win this quickly... 54 f5 Kg8
55 Qxd5+ Kh8
56 e6 Qg5
57 Qe5+ Kh7
58 Rbe3 Ree8
59 f6 Qxe5
60 Rxe5 Kg6
61 f7 Rc8
62 Rc5 Rcd8
63 d5 ...
click for larger viewBlack has no counterplay and is facing a pawn storm. |
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Nov-30-11
| | whittaker: OK, thanks gofer et al for the tutorials on winning a won game... I was having trouble in the variations I was playing, because I was either allowing R/Q incursions on my 1st and 2nd ranks, with mating/queening or perpetual check threats, or else I was trading off everything and winding up in a K & P endgame where my K was stuck in the quadrant of the g3-pawn and the Black K was holding off my pawns in the center. Containing the counterplay and inching forward is the key. |
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| Nov-30-11 | | CHESSTTCAMPS: <whittaker> I feel your pain. I messed this up a few times before getting it right. Another approach you can use to find "best play" (in case no kibitzer comes up with a solution) is to set up the position one move prior to the puzzle with colors reversed (using http://www.chessvideos.tv/endgame-t...) and see how it plays the white position represented as black. |
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Nov-30-11
 | | LIFE Master AJ: 51.Nxf5!, and Black can resign ...
If 51...QxN ('?') 52.RxP/g3+, hxg3; 53.Rxg3+, and Black will lose (at least) the Queen.Its funny how deplorable (inferior) the Black Bishop is here in comparison to the unbridled power of the White Knight on e3. |
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Nov-30-11
| | LIFE Master AJ: Black played on for a couple of moves, but saw that it was hopeless once White got his connected, passed Pawns rolling. |
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Nov-30-11
| | LIFE Master AJ: I have not checked this with the compter (yet); but personally I think that taking Black's dreadful Bishop was a waste of time ... (52.Ne3!) |
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| Dec-01-11 | | King Death: < LIFE Master AJ: I have not checked this with the compter (yet); but personally I think that taking Black's dreadful Bishop was a waste of time ... (52.Ne3!)> Both moves probably get the job done, but in a practical game I don't blame somebody for choosing to get rid of the B. Besides, <AJ>, who cares if the computer comes up with an evaluation of one move being just a hair better than the other? Did you get to be a master by sitting in front of one? Do your play your live games today with one next to you? Didn't think so. I'm a few years older than you and back then we all got where we did on our own. There was no Fritz or other engine to lead us by the hand. Poor Kostic. He was a strong player, better than the likes of me, but the only thing history remembers him for is losing 5 straight games to Capablanca in a match. |
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| Dec-01-11 | | CHESSTTCAMPS: <<LIFE Master AJ:>I think that taking Black's dreadful Bishop was a waste of time ... (52.Ne3!)> No question that either move wins, but I found that my easiest win against Crafty (allowing no counterplay whatsoever) went as follows: 51.Nxf5 Kf7 52.Ne3! Rh6 53.f5 Ra6 54.Ng4
White steadily improves the position of his pieces to prepare pushing the passed pawns. 54... Bd8 55.e6+ Kg7 56.Rbe3 Qg5
click for larger view57.Re5!
White continues to spurn the exchange. Now black can't stop the combined threats of 58.f6+ and e7. 57... Bf6 58.Nf6 Rf6 59.e7 ... and black can safely resign at this point. A player like Karpov would probably play the position like this. |
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