Mate Puzzle (1042)

After the setup move Bg4, it is White to move. Find the forcing continuation before checking the solution.

Position after Bg4. White to move.

Puzzle ID

0ON8L

Rating

1042

Side to move

White

Themes

Mate, Mate in 3, Middlegame

Material

Black is ahead by 2 points

FEN

rn4k1/pp4pp/2p5/2P1p3/6bq/6p1/PP1PB1P1/R1B2QK1 w - - 1 18

What to look for

Calculate a forcing checkmate sequence.

18. Bc4+ 18... Be6 19. Bxe6+ 19... Kh8 20. Qf8#

The full forcing line from the source position is:

17... Bg4 18. Bc4+ 18... Be6 19. Bxe6+ 19... Kh8 20. Qf8#