The Window That Opens for One Move

8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h

The Window That Opens for One Move

Black has just pushed a pawn two squares to dodge the mating threat on the g-file. There is an immediate reply that ends the game — but it is available only right now.

basicoDemonstration
Watch the solution step by step. Click Next Move to advance.Move 0 of 1