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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Ra7 draw
3 K3b4 loss in 2 half-moves
4 K3c4 loss in 2 half-moves
5 K3d4 loss in 2 half-moves
6 K5b4 loss in 2 half-moves
7 K5c4 loss in 2 half-moves
8 K5d4 loss in 2 half-moves
9 Kb2 loss in 2 half-moves
10 Kb3 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Ra1 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Ra3 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra6 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rb5 loss in 2 half-moves