Knightmare

Logic Level 5

White to play and checkmate.

What is the least amount of knight moves needed in the forcing mating sequence, assuming both sides play optimally?


The answer is 29.

Seth-Riley Adams by Seth-Riley Adams , 18, South Africa

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1 solution

Seth-Riley Adams
Jun 16, 2016

Relevant wiki: Chess Puzzles

1.Neg4+ Kf5 2.Nh6+ Ke5 3.Nf7+ Kf5 4.Nd6+ Ke5 5.Ng4+ Kd5 6.Ne3+ Ke5 7.Nf7+ Ke4 8.Ng5+ Ke5 9.Nf3+ Ke4 10.Nxd2+ Ke5 11.Nf3+ Ke4 12.Ng5+ Ke5 13.Nf7+ Ke4 14.Nd6+ Ke5 15.Ng4+ Kd5 16.Nf6+ Ke5 17.Nf7+ Kf5 18.Nh6+ Ke5 19.Nhg4+ Kf5 20.Ne3+ Ke5 21.Nfg4+ Ke4 22.Nf2+ Ke5 23.Nxd3+ Ke4 24.Nf2+ Ke5 25.Nfg4+ Ke4 26.Nf6+ Ke5 27.Nc4+ Kf5 28.Nd6+ Ke5 29.Ng4+ Kd5 30.c4#

Since the last move that checkmates the Black king is a pawn and all of the other white moves are knight moves, White needs a minimum of 29 knight moves to checkmate Black.

3 Helpful 0 Interesting 0 Brilliant 0 Confused

I made it till 4th step and thought it was checkmate lol....nice solution Thank-you

Abu Zubair - 4 years, 11 months ago

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No problem!

Seth-Riley Adams - 4 years, 11 months ago

Amazing! I made a mistake in 27 movie: 27.Ceg4+,28.Ch6+,29.Cf7+,30Cd6+,31.Cg4+,32C4#

Mohamad Zare - 4 years, 8 months ago

I made it till move 11 but couldn't see what to do next

Siva Budaraju - 4 years, 4 months ago

Nice Question and solution! (+1)

Samara Simha Reddy - 4 years, 12 months ago

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Thanks! :)

Seth-Riley Adams - 4 years, 12 months ago

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