Chess Puzzle #17049

CHESS PUZZLE, FEN 8/k2p4/3Bq3/p1K3R1/8/r1NP4/1P1n2Q1/1b6 b - -

Added by:	jwg1977
Added on:	10-Nov-09
Description:
Difficulty:	chess puzzle 8/k2p4/3Bq3/p1K3R1/8/r1NP4/1P1n2Q1/1b6 b - -
Attempts:	1235
Solved:	994 (80%)


Black to move, mate in 2

Comments: (12) » Last

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phonybenoni
21-Apr-18, 00:34

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Not at all difficult, but the position is unusual enough that it has to be solved by thought rather than just bashing the pieces around instinctively. I expect the current 78% solve rate will not rise much.

abeehilmorst
21-Apr-18, 00:43

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I agree, most probably the solve rate will stop at 100%.

spelbnder
21-Apr-18, 09:01

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at 82 right now.

pony_boy
21-Apr-18, 13:01

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I think not

As long as one person has already failed, I'm not a mathematician, but how can it be possible to rise to 100%?

existentialist
21-Apr-18, 20:49

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As I understand the counting of the success percentage

(which could be wrong)

One is counted as having tried as soon as one clicks on the problem, and not counted as having solved it until one solves it. Therefore, if everyone who has clicked on the problem is still trying, and eventually solves it, then the solve rate could reach 100%.

But maybe I don't understand how the counting works.

pony_boy
23-Apr-18, 13:15

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counting as having tried?

@existentialist you could be right. I thought it didn't start until you clicked on solve. Maybe one of the long-timers could help us out here.

spelbnder
27-Apr-18, 13:39

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As the percent is calculated by computer, if you get close enough to 100% it will round up

pony_boy
27-Apr-18, 20:02

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% calculating

I see it now. Thanks @spelbnder.

ghope26
08-Jan-22, 02:28

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more fun / less serious

I think abeehilmorst's comment is quite funny

jayelthefirst
08-Jan-22, 05:34

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Moving in your mind!

I think the point made by phonybenoni is important. I try to solve puzzles mentally before moving on the board because this is what real play requires and it's good practice. I don't always succeed but I'm getting better.

schizoidman
08-Jan-22, 10:44

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phoneybenoni

I agree. One of the things that makes this one easier is that in a 2-mover, you can rarely allow a spite check which means the first move must be a check.

bookkeeper
01-May-23, 06:07

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flip the board

White to play is an easy Mate in two.

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