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 Ra3 win in 5 half-moves
3 Ka5 draw
4 Ka7 draw
5 Kb6 draw
6 Kb7 draw
7 Kc2 draw
8 Kd2 draw
9 Ke2 draw
10 Ke3 draw
11 Ke4 draw
12 Rb3 draw
13 Rc2 draw
14 Kc4 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves