Mate Puzzle (1605)

After the setup move Kc1, it is Black to move. Find the forcing continuation before checking the solution.

Position after Kc1. Black to move.

Puzzle ID

0nJKh

Rating

1605

Side to move

Black

Themes

Mate, Mate in 3, Middlegame

Material

White is ahead by 4 points

FEN

3r1r1k/4Nppp/p2p2P1/3RpP2/q1P1Q2P/1p2B3/1Pn5/2K2BR1 b - - 2 27

What to look for

Calculate a forcing checkmate sequence.

27... Qa1+ 28. Kd2 28... Qe1+ 29. Kd3 29... Nb4#

The full forcing line from the source position is:

27. Kc1 27... Qa1+ 28. Kd2 28... Qe1+ 29. Kd3 29... Nb4#