Chess Problem-9

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5th July 2009, 02:43am

by sanjayd1998
Bangalore India

Member Since: Nov 2008
Member Points: 168

White to play and mate in three.

Hint:Black threatenes to play Kc7, when White's bishop will be attacked. If white spends a tempo saving his bishop, then he will have a little chance of mating in three. So soppose White plays 1 Bf5, for example. Black replies 1...Kc7 and after 2 Qxa6, threataning to mate on c8, the king just runs away by 2...Kd8. How can White improve on this line by again mating on c8, but at the same time preventing 1...Kc7 followed by 2...Kd8?

White's main problem is to deal with Black's defense 1...Kc7. The temptation is to prevent ...Kc7 directly by playing 1 Qxe5, but then Black replies 1...a5 and, even though White's pieces appear very menacing, there is no mate in two. 1 Qh5 is a cunning idea, so that 1...Kc7 can be met by 2 Qe8 and 3 Qc8 mate, but again 1...a5 is a satisfactory defense. This leads to the idea of transferring the queen to c8 by another route, but after 1 Bf5 Kc7 2 Qxa6, for example, Black slips away by 2...Kd8. This surprising move clears the way for 2 Qg4 and 3 Qc8 mate. It also copes with the defense 1...Kc7 2 Qg4 Kd8, because White has the mate 3 Qd7 ready. Black has only one way to meet the threat. 1...a5 If now 2 Qg4, then 2...a6 and Black has created a flight square for his king on a7. While the move 1...a5 has prevented one mate, it has opened the door to another, far more spectacular, possibility. 2 Qa6+! White suddenly changes plans and sacrifices his queen. 2...Kxa6 Forced, or else Qc8 mates. 3 Bc8 mate.

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5th July 2009, 03:07am

by Lord-Chaos
Devon England

Member Since: Feb 2009
Member Points: 1961

it would be better if you put in a move list type of thingy. for example, if the king moves to a8, then Qb2 followed by Bg2# (omg spoiler, the bishop can get to g2 hint hint xD)

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5th July 2009, 03:07am

by Lord-Chaos
Devon England

Member Since: Feb 2009
Member Points: 1961

but its nice anyway.

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5th July 2009, 03:16am

by Tajamoen
International

Member Since: Apr 2009
Member Points: 392

Good puzzle, here I have other solutions (See Move List):

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5th July 2009, 03:27am

by sanjayd1998
Bangalore India

Member Since: Nov 2008
Member Points: 168

Tajamoen wrote:

Good puzzle, here I have other solutions (See Move List):

But after 1 Kd6 Black plays 1...Kb6 and if 2 Qxe5 why should Black play 2...a5? Black should play 2...Kb7 and there is no mate in one. There are NO more solutions.

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