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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kc6 win in 5 half-moves
3 Kb3 draw
4 Kc5 draw
5 Kd3 draw
6 Kdc4 draw
7 Kdd4 draw
8 Ra5 draw
9 Ra7 draw
10 Kb2 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kcc4 loss in 2 half-moves
14 Kcd4 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke6 loss in 2 half-moves
20 Ra1 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra4 loss in 2 half-moves
23 Ra6 loss in 2 half-moves
24 Ra8 loss in 2 half-moves