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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Rb6 win in 1 half-moves
3 c3 loss in 2 half-moves
4 f5 loss in 1 half-moves
5 Ra4 loss in 1 half-moves
6 Rb1 loss in 1 half-moves
7 Rb2 loss in 1 half-moves
8 Rb5 loss in 1 half-moves
9 Rb7 loss in 1 half-moves
10 Rb8 loss in 1 half-moves