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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kb1 win in 3 half-moves
3 Kc1 win in 3 half-moves
4 Kc3 win in 3 half-moves
5 Rb1 win in 3 half-moves
6 Kb3 draw
7 Kd1 draw
8 Kd2 draw
9 Ra2 draw
10 Kd3 loss in 2 half-moves
11 Rb3 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rb5 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves