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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ra8 win in 7 half-moves
3 Ra1 win in 9 half-moves
4 Ra2 draw
5 Ra3 draw
6 Ra7 draw
7 Ka7 loss in 2 half-moves
8 Ka8 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Kc8 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Kd4 loss in 1 half-moves
20 Kd5 loss in 1 half-moves
21 Kd6 loss in 1 half-moves