Mate Puzzle (1148)

After the setup move g3, it is Black to move. Find the forcing continuation before checking the solution.

Position after g3. Black to move.

Puzzle ID

050wQ

Rating

1148

Side to move

Black

Themes

Mate, Mate in 2, Middlegame

Material

Material is level

FEN

r1b2rk1/p4ppp/1n6/1P2q3/4p1n1/1BN1P1P1/1P1NQP2/R4R1K b - - 0 19

What to look for

Calculate a forcing checkmate sequence.

19... Qh5+ 20. Kg1 20... Qh2#

The full forcing line from the source position is:

19. g3 19... Qh5+ 20. Kg1 20... Qh2#