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

EGTB: win in 4 half-moves

# move score
1 K5b5 win in 3 half-moves
2 K6b6 win in 3 half-moves
3 Rb5 win in 3 half-moves
4 Ra6 win in 11 half-moves
5 Ra1 win in 13 half-moves
6 Ra2 win in 13 half-moves
7 Ra3 win in 13 half-moves
8 K6b5 draw
9 Kb7 draw
10 Kc7 draw
11 Ra8 draw
12 K5b6 loss in 2 half-moves
13 K5d5 loss in 2 half-moves
14 K5d6 loss in 2 half-moves
15 K6d5 loss in 2 half-moves
16 K6d6 loss in 2 half-moves
17 Kb4 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Kd4 loss in 2 half-moves
20 Kd7 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra7 loss in 2 half-moves