Mate Puzzle (1036)

After the setup move Nd2, it is Black to move. Find the forcing continuation before checking the solution.

Position after Nd2. Black to move.

Puzzle ID

09eE1

Rating

1036

Side to move

Black

Themes

Mate, Mate in 2, Middlegame

Material

White is ahead by 2 points

FEN

q7/1Rp1r3/1n1pBk2/1P1Pp3/1P3bQp/5P1P/3N2P1/7K b - - 8 39

What to look for

Calculate a forcing checkmate sequence.

39... Qa1+ 40. Nb1 40... Qxb1#

The full forcing line from the source position is:

39. Nd2 39... Qa1+ 40. Nb1 40... Qxb1#