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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Rb2 win in 3 half-moves
3 Rb3 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Ke4 draw
6 Rb4 draw
7 Rb7 draw
8 Kb6 loss in 2 half-moves
9 Kcc6 loss in 2 half-moves
10 Kcd6 loss in 2 half-moves
11 Kdc6 loss in 2 half-moves
12 Kdd6 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Ra5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Kb4 loss in 1 half-moves
18 Kcc4 loss in 1 half-moves
19 Kcd4 loss in 1 half-moves
20 Kdc4 loss in 1 half-moves
21 Kdd4 loss in 1 half-moves