Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 c5 win in 1 half-moves
2 Rb3 win in 1 half-moves
3 Ra6 loss in 4 half-moves
4 Rb1 loss in 2 half-moves
5 Rb2 loss in 2 half-moves
6 Rb4 loss in 2 half-moves
7 Rb5 loss in 2 half-moves
8 Rb7 loss in 2 half-moves
9 Rb8 loss in 2 half-moves