Mate Puzzle (1444)

After the setup move Qxc7, it is Black to move. Find the forcing continuation before checking the solution.

Position after Qxc7. Black to move.

Puzzle ID

09HsG

Rating

1444

Side to move

Black

Themes

Mate, Mate in 3, Middlegame

Material

White is ahead by 5 points

FEN

3r1r1k/p1Q3pp/8/4p3/1P2P2q/8/P4PPP/R1B2RK1 b - - 0 20

What to look for

Calculate a forcing checkmate sequence.

20... Qxf2+ 21. Rxf2 21... Rd1+ 22. Rf1 22... Rdxf1#

The full forcing line from the source position is:

20. Qxc7 20... Qxf2+ 21. Rxf2 21... Rd1+ 22. Rf1 22... Rdxf1#