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 Kd4 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Kd6 win in 3 half-moves
5 Ra8 win in 3 half-moves
6 Rc6 win in 3 half-moves
7 Kc6 win in 5 half-moves
8 Kb4 loss in 2 half-moves
9 Kb6 loss in 2 half-moves
10 Rb8 loss in 2 half-moves
11 Rc7 loss in 2 half-moves
12 Rd8 loss in 2 half-moves
13 Re8 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg8 loss in 2 half-moves
16 Rh8 loss in 2 half-moves
17 Kc4 loss in 1 half-moves