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