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 Kc1 draw
3 Kc3 draw
4 Kd1 draw
5 Kd3 draw
6 Ra2 draw
7 Rb6 draw
8 Rb7 draw
9 Rb8 draw
10 Kb1 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kd2 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves