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 K4b4 loss in 2 half-moves
4 K4b5 loss in 2 half-moves
5 K4d4 loss in 2 half-moves
6 K4d5 loss in 2 half-moves
7 K5b4 loss in 2 half-moves
8 K5b5 loss in 2 half-moves
9 K5d4 loss in 2 half-moves
10 K5d5 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra8 loss in 2 half-moves
22 Rb4 loss in 2 half-moves