Mate Puzzle (1941)

After the setup move Rc7, it is Black to move. Find the forcing continuation before checking the solution.

Position after Rc7. Black to move.

Puzzle ID

0XXdZ

Rating

1941

Side to move

Black

Themes

Mate, Mate in 3, Middlegame

Material

White is ahead by 1 point

FEN

r5k1/ppR3b1/3pN3/3Pp1Bp/1P2Pnq1/5rP1/P4P2/3QR1K1 b - - 6 26

What to look for

Calculate a forcing checkmate sequence.

26... Rxg3+ 27. fxg3 27... Qxg3+ 28. Kf1 28... Qg2#

The full forcing line from the source position is:

26. Rc7 26... Rxg3+ 27. fxg3 27... Qxg3+ 28. Kf1 28... Qg2#