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| Dec-11-13 | | diagonalley: i went with 27 ... Q-R6 (seems it was second-best but still good enough to win IMO) |
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| Dec-11-13 | | hirthman: Is there anything wrong with 28 ...Qb6 and mate on b2 next move? |
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| Dec-11-13 | | cocker: <hirthman> The main thing wrong with 28 ... Qb6 is 29 axb6. |
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| Dec-11-13 | | whiteshark: Hünerkopf <Chicken head>, the <Über-Zieher.<*>> |
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Dec-11-13
 | | Once: One day chess may be "solved". We may get to a point in the development of computers where you can buy an I-pad app for 79 cents which will play a flawless game of chess. Or Magnus may wake up one morning having had a particularly lucid dream and announce that he had finally worked it out. The answer to life, the universe and everything may be 42, but the answer to chess may turn out to be: "1. f4 resigns". Or "1. draw agreed". And when that awful day comes, what will we do? Give up on this wonderful game of ours and take up poker or Sudoku instead? What I think we will do is change the game to make sure that it is still a challenge. Fischerrandom chess perhaps. Maybe chess variants, in honour of my ex-club mate (and much missed) David Pritchard. This POTD might be part of the answer. It might herald a rule change which could add a new dimension to the game. Here we go ... "Once per game, a player may choose to remove one of his pieces in return for moving an enemy piece and then making a move as normal." In effect you put one of your pieces in the box, move one of your opponents pieces and then make a normal move. Think of it as an Incan sacrifice to one of their gods. You give up a piece in return for the gods giving your enemy a little nudge. Let me give you an example. Here is today's POTD starting position: 
click for larger viewNow if you are playing the classical form of chess you would apply our normal maxim of "check, check, check a stalemated king". Which would lead you swiftly to 27...Rb1+ and the rest you know. But in our new and improved game, you would cry out "un petit coup de coude!", remove your f8 rook from the board, place his king on a1 and slam your queen down on a3 with a cry of "checkmate"! 
click for larger viewWhich, funnily enough, is exactly how the game ended under the classical rules. Naturally, the pedants in the audience would point out that 30...Qa3 is only mate if white had not already played his once-per-game nudge. Otherwise, white would save himself with a nudge of his own - 31. Remove Rh2, move the black queen to b3, cxb3 With both players having exhausted their nudges, white would win on material. Sure it needs a bit of work, but I think we could be on to something here. This time next year we could all be millionaires. |
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| Dec-11-13 | | morfishine: <27...Rb1+> forces mate After <28.Kxb1 Rb8+> Black can only delay mate with <29.Qb4> at which point Black finishes with <29...Rxb4+ 30.Ka2 Rb2+ 31.Ka1 Qa3#> *****
PM: 27...Qa3 wins too as White, who has to vacate d2 for his King, has no good place for his Queen; for example, 28.Qd6 Rb1+ 29.Kd2 Qxd6+ 30.Ke2 Qxd1+ ***** |
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| Dec-11-13 | | gars: Where are you, <chrisowen>? I miss your convoluted style! |
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| Dec-11-13 | | zb2cr: Got this one after some 2 minutes of thought. I have nothing to add to the commentary already provided by <raviarun>, <Phony Benoni>, <lost in space>, <Patriot>, <M.Hassan>, <FSR>, <Once>, and <morfishine>. |
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| Dec-11-13 | | jdc2: I had no trouble with yesterday's problem, today no such luck. First thing I saw was 27...Nc3 and didn't notice the BQ en prise. I guess it depends on which patterns are at the top of your mind when you approach the problem. Also, when I do a problem with black to move, I always rotate the book 180 degrees, so unless I copy the problem into Fritz and flip the board, I'm looking at it from a perspective that is not normal for me. |
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Dec-11-13
 | | agb2002: Black is two pawns down.
White threatens 28.Qxe3.
Black can deliver mate with 27... Rb1+ 28.Kxb1 Rb8+:
A) 29.Ka1 Qa3#.
B) 29.Ka2 Rb2+ 30.Ka1 Qa3#.
C) 29.Kc1 Qa3#.
D) 29.Qb4 Rxb4+ ends up like A or B. |
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Dec-11-13
 | | Penguincw: Yes! I got a Wednesday puzzle (has in solved in, not just guessed the first move correctly). |
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| Dec-11-13 | | raviarun: <Mendrys>, If 27...Qa3, how about 28.Qd8 as a response? 28...Rxc2+ Kxc2 29.Qc3+ Kb1 and then, not sure how black can proceed, with the bank rank mate threat too be avoided. |
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| Dec-11-13 | | mel gibson: 25 Ne7+ loses the game for white
according to the computer.
White should have moved 25 Q c6.
If black queen takes white queen,
white forks with Knight+ & recovers
cancelling any attack. |
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Dec-11-13
 | | gawain: I didn't quite get it. Started with 27...Rb1+ 28 Kxb1 then tried 28...Qb6+ hoping f0r 29 Kc1 Qb2# The trouble is that after 29 Qb4 Qxb4+ 30 Kc1 Qb2+ the King escapes 31 Kd2. At least Black has won the queen and still wins easily. |
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| Dec-11-13 | | WoodPushkin: Greetings:
Nice finish. With the b2 rook in its own way the initial ideas don't work as the White queen allows the escape. So the question becomes how to keep the king in his box and make the a3 square useful to the Black queen. The second Black rook 'seems' quite busy at home. But after seeing whole board the auxiliary idea of 8th-row rook to b-file to continue the attack beyond knight scope and Black reaches the desired conclusion. JAH Love |
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| Dec-11-13 | | diagonalley: <raviarun> ...excellent try, although there is then 28 Qd8 Qa1+, 29 Kd2 Rxd8+ |
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Dec-11-13
 | | playground player: How about this? Allow any Bishop to "change color" by moving one square to a square of the opposite color from which he starts. Allow players to make this move as often as they please. It should liven things up. |
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Dec-11-13
 | | kevin86: I was looking for the mate in 3 with the queen,but the pawn prevents the b-file check. So it's the rook that makes the fatal check. then the queen and knight join in for the quick finish. |
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| Dec-11-13 | | GoldenKnight: Actually saw this one all the way. Did take a couple of minutes, though. |
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| Dec-11-13 | | LoveThatJoker: <27...Rb1+! 28. Kxb1 Rb8+29. Ka2> (29. Qb4 Rxb4+ 30. Ka2 Rb2+ mating; 29. else Qa3#)
<29...Rb2+ 30. Ka1 Qa3#> LTJ |
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| Dec-11-13 | | Mendrys: <Ravarium: Mendrys, If 27...Qa3, how about 28.Qd8 as a response?> If 28 Qd8 then 28...Rb8+ 29. Ke2 (29. Kb1 Qb2#) Rxd8+ |
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| Dec-11-13 | | BOSTER: <pp it should liven things up> if CG allow players to make comments from voice.. |
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| Dec-11-13 | | Gilmoy: <Once: "Once per game, a player may choose to remove one of his pieces ... then making a move as normal." In effect you put one of your pieces in the box ... and then make a normal move. Think of it as an Incan sacrifice to one of their gods.> White happily accepts even a weaker version of that idea, and after <25.Ne7+ Kh8> 
click for larger viewplays 26.<here have an h-pawn> Rxh7+ and Anastasia next: 
click for larger view |
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| Dec-11-13 | | BOSTER: POTD. new dimension. qe3 out. r c8. Q d8+. |
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Dec-11-13
 | | Phony Benoni: <Once> At first, I thought your little variant might refute Bird's Opening, <1.f4>, since Black could respond by removing his e-pawn, moving White's g-pawn to g4, and playing <1...Qh4#.> But then I realized White would have a legal move by removing his h-pawn and taking the queen. Indeed, it's hard to imagine a checkmate that couldn't be undone as long as the option was available. Even a double check could be cancelled by making the opponent retract their previous move. |
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Kibitzing
sac: 27...Rb1+