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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ra5 draw
3 Rb1 draw
4 Rb2 draw
5 Rb6 draw
6 Kb7 loss in 2 half-moves
7 Kb8 loss in 2 half-moves
8 Kc4 loss in 2 half-moves
9 Kc8 loss in 2 half-moves
10 Kd4 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Kd8 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 K5b6 loss in 1 half-moves
19 K5c6 loss in 1 half-moves
20 K5d6 loss in 1 half-moves
21 K7b6 loss in 1 half-moves
22 K7c6 loss in 1 half-moves
23 K7d6 loss in 1 half-moves