Checkmate

Logic Level 5

White to play and checkmate.

What is the least amount of moves that White can checkmate Black assuming both sides play optimally?

Give your answer as the White moves in concatenated form of the number part of the coordinates​ where the piece moves to (e.g.: 84562345... 84562345... etc.) with the least amount of moves to checkmate at the end.


The answer is 323741544518362623372611.

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1 solution

Seth-Riley Adams
Jun 15, 2016

Relevant wiki: Chess Puzzles

1.Qc2 Nc5 2.Nc7 Na3 3.Qd1 Bxe4 4.Bxe4+ Nxe4 5.Qd5+ Kb6 6.Na8+ Ka6 7.Qc6+ Ka5 8.Qb6+ Ka4 9.Qb3+ Ka5 10.Bc7+ Ka6 11.Qb6#

How about this? 1. Nc7 Nce5 2. Qb5+ Kxc7 3. Qxd5 Be7 4. Bg4 Kb6 5. Bxd7 Nxd7 6. Qxd7 Bb4 7. Bf2+ Ka6 8. a4 Bc5 9. Bxc5 Ka5 10. Qb5#

Siva Bathula - 4 years, 9 months ago

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  1. Bf2 is not a check! (?)

Bill Snyder - 2 years, 6 months ago

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I mean 7. Bf2 is not a check! (?)

Bill Snyder - 2 years, 6 months ago

After 1.Nc7 Nce5 2.Qb5+ Kxc7 3.Qxd5 Black can play 3...e2 first, delaying the checkmate.

Seth-Riley Adams - 4 years, 9 months ago

Yeah you're right.

Siva Bathula - 4 years, 9 months ago

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