Chess tactic

Crushing Puzzle (2081)

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

Position after O-O-O. White to move.

Puzzle ID

0I807

Rating

2081

Side to move

White

Themes

Crushing, Middlegame, Sacrifice

Material

Black is ahead by 1 point

FEN

2kr2nr/pp1n1qb1/2pQ3p/3p2p1/3P1pP1/2NP1N1P/PP6/R1B2RK1 w - - 5 18

What to look for

Find a move that decisively changes the evaluation, usually by force.

18. Nb5 18... cxb5 19. Bxf4

The full forcing line from the source position is:

17... O-O-O 18. Nb5 18... cxb5 19. Bxf4