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 Kb8 win in 3 half-moves
3 Kcc7 win in 5 half-moves
4 Kcd8 draw
5 Kdc7 draw
6 Ra1 draw
7 Ra2 draw
8 Ra3 draw
9 Ra4 draw
10 Ra8 draw
11 Rb7 draw
12 Rc7 draw
13 Kc6 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Kdd8 loss in 2 half-moves
16 Ke6 loss in 2 half-moves
17 Ke7 loss in 2 half-moves
18 Ke8 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Ra6 loss in 2 half-moves