Drag a piece to play a move, or pick one from the list. Arrow keys step through the line.
Blumenfeld Countergambit is a chess opening that arises after 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5. It is classified E10 in the ECO system, and the position after these moves has white to move.
Each of these is a named opening reached by playing on from 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5. Open any of them to load the position on the board.