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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Rc8 win in 9 half-moves
3 Ka7 draw
4 Kb8 draw
5 Kd4 draw
6 Ke4 draw
7 Rc1 draw
8 Rc4 draw
9 Rc6 draw
10 Rc7 draw
11 Kc6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Ra5 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Kc4 loss in 1 half-moves