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 Kb6 win in 3 half-moves
3 Ka6 win in 5 half-moves
4 Kaa4 draw
5 Kab4 draw
6 Ra1 draw
7 Ka2 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kba4 loss in 2 half-moves
10 Kbb4 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra4 loss in 2 half-moves