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 Ka5 draw
3 Ka7 draw
4 Kb6 draw
5 Kb7 draw
6 Ke1 draw
7 Ra1 draw
8 Rb1 draw
9 Rc4 draw
10 Kc2 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Rc2 loss in 2 half-moves
14 Rc3 loss in 2 half-moves
15 Rc5 loss in 2 half-moves
16 Rc6 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Rc8 loss in 2 half-moves