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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kb7 win in 3 half-moves
3 Kcc7 win in 3 half-moves
4 Rb5 win in 3 half-moves
5 Rb7 win in 3 half-moves
6 Kc8 win in 5 half-moves
7 Kcd7 win in 5 half-moves
8 Kdc7 win in 5 half-moves
9 Kdd7 win in 5 half-moves
10 Ke7 win in 5 half-moves
11 Ke8 win in 5 half-moves
12 Rb8 win in 5 half-moves
13 Kd6 draw
14 Ra6 draw
15 Kb5 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves