Mate Puzzle (1866)

After the setup move Qb3, it is Black to move. Find the forcing continuation before checking the solution.

Position after Qb3. Black to move.

Puzzle ID

06gG3

Rating

1866

Side to move

Black

Themes

Mate, Mate in 2, Middlegame

Material

White is ahead by 1 point

FEN

3r1rk1/pp5p/2p1q3/8/4N3/1Q4Pn/PPP3KP/R6R b - - 3 25

What to look for

Calculate a forcing checkmate sequence.

25... Rd2+ 26. Nxd2 26... Rf2#

The full forcing line from the source position is:

25. Qb3 25... Rd2+ 26. Nxd2 26... Rf2#