White has just played 33.Qb4-c3 which seems to ensure an exchange of queens because of the threat Rd8+. However Black has a surprising move. Can you see it?
Click on the piece you want to move and then on the target square.

Unaware of the danger White has just played 13.c3?. Can you find the winning blow?
Click on the piece you want to move and then on the target square.

Black has just played 28...Qa2xPa3, overlooking what former World Champion Jose Capablanca called a petite combination.

Black has just played 8...Nxe4, allowing White to make a very nice tactic.