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

EGTB: win in 6 half-moves

# move score
1 Kb5 win in 5 half-moves
2 Kb6 draw
3 Kc6 draw
4 Kd5 draw
5 Kd6 draw
6 Ra3 draw
7 Ra4 draw
8 Ra6 draw
9 Ra7 draw
10 Ra8 draw
11 Kb4 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kd4 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Rb5 loss in 2 half-moves