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

EGTB: win in 2 half-moves

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