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| From | Message | Posted by frankambruce
blitzbrain.net
8/18/2008
03:27:51
Play online chess |  Subject: puzzle #5698
Message:
I have been looking through the different moves the Bishop could do in this puzzle and the next obviously only move the Knight would do in order to reach the mate. I was surprised that Nc7 as an alternative solution had been rejected as leading to more moves than the given solution. I look and relook at the board but can't understand why Nc7 would not be a mate within the two moves to mate. Could some of you more-experienced-players help me with that ?
| Posted by ganstaman
blitzbrain.net
8/18/2008
04:29:33
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Message:
Well 1. Nc7 Bxc7+ and if 2. Kxc7, we have stalemate (which is a draw, and not checkmate). Any other second move by white doesn't mate either, so 1. Nc7 doesn't deliver mate-in-2 (in fact, I don't think it even wins at all).
| Posted by heinzkat
blitzbrain.net
8/18/2008
04:33:50
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Message:
I think you want to add an alternative mating move, which isn't possible. I.e.
1. Ka6 Bh8
2. Nb6# or Nc7#
Both moves will be accepted when someone tries to solve the puzzle; but you cannot add an alternative to GK's automatic 2. Nb6#.
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It's All in the Programming: Computer Falls to a Beginner — It has been commonly accepted for about a decade that computers are better than people at chess. But a couple of weeks ago, a widely circulated story out of Ukraine suggested that a man who learned to play the game less than a year ago had beaten the world’s best chess program. The story seemed preposterous. The man, Andriy Slyusarchuk, beat Rybka 4, the strongest commercially available chess program, in a two-game match, winning one and drawing the other. He not only won, he played what is known as blindfold chess, meaning he called out his moves and had the computer’s relayed to him. The match was taped in front of an audience and broadcast on television. Slyusarchuk, 39, claims ...
Posted by frankambruce
blitzbrain.net
8/18/2008
04:55:28
Play online chess |
Message:
Thank you ganstaman and heinzkat for your prompt responses.
heinzkat: I see. I came back on the refreshed board and the Bishop got on f3, when the Nc7 has been accepted. But... as I had been looking through your puzzle an hour ago, coming to the solution and hitting the returnbutton beneith the board to study the alternative solutions, I noticed that the Nc7 option hadn't been available. Shouldn't all possible solutions be in the Solutionlist on the right of the board?
PS: I like your puzzles heinzkat. Maybe one day I come through the twothousand and thanks to the given pratice might be prepared to offer you a nice game :)
———
U.S. chess championship felt like a tornado — I wasn’t at the airport last month, but I still feel like I got hit by a tornado. For some players, the 2011 U.S. Chess Championship concluded April 29, but unfortunately April 21 was my last game. On the bright side, I had a ringside seat for the remainder of the chess matches, including the heart-pounding women’s finals, which went into an Armageddon round (that’s triple overtime)! The chess tournament featured an interesting format – the top two players from two eight-player round-robin groups qualified for the semi-final matches. The two semi-finalists from the “A” group were no surprise. Reigning Chess Champion and Grandmaster (GM) Gata Kamsky and last year’s runner-up, GM Yury Shulman, easily ...
Posted by tugger
blitzbrain.net
8/25/2008
13:41:41
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Message:
i find it unusual that if there are two possible mates at the end of a puzzle, only one is listed in the possible moves. i guess it's because the puzzle maker here spots a mate in one immediately, records the first move it spots, then moves onto a different position. but all mate in one moves are accepted when solving, even if it isn't listed.
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Chess notes — China is steadily gaining the respect of the world chess community as some of its players have emerged to become substantially dangerous competitors in the West. So the Chinese chess championships have been watched with interest this year. In the 2011 championship, a dark horse has once again emerged to take first place: Ding Liren. The 18-year-old won the title in 2009 (in part because of a defaulted game), despite being one of the lower-rated chess players in the field. His score this year was a startling 9-2 against such well-known chess grandmasters as Yue Wang and Xiangzhi Bu. Ding has only occasionally played in the West. World Women’s chess champion Hou Yifan scored an impressive ...
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