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 Kb5 win in 3 half-moves
3 Rb5 win in 3 half-moves
4 Rd5 win in 3 half-moves
5 Rc5 win in 5 half-moves
6 Kc5 win in 9 half-moves
7 Kb3 draw
8 Kc3 draw
9 Kcd4 draw
10 Kcd5 draw
11 Kd3 draw
12 Ked5 draw
13 Ra2 draw
14 Ra4 draw
15 Kd6 loss in 2 half-moves
16 Ke4 loss in 2 half-moves
17 Ke6 loss in 2 half-moves
18 Ked4 loss in 2 half-moves
19 Kf4 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Ra1 loss in 2 half-moves
23 Ra3 loss in 2 half-moves
24 Ra6 loss in 2 half-moves
25 Ra7 loss in 2 half-moves
26 Ra8 loss in 2 half-moves