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

EGTB: win in 4 half-moves

# move score
1 K5b6 win in 3 half-moves
2 K6b6 win in 3 half-moves
3 Kb4 win in 3 half-moves
4 Ra7 win in 5 half-moves
5 Ra5 win in 7 half-moves
6 K5b5 draw
7 Kc4 draw
8 Ra1 draw
9 Ra2 draw
10 Ra3 draw
11 Ra8 draw
12 Rb6 draw
13 K5d5 loss in 2 half-moves
14 K5d6 loss in 2 half-moves
15 K6b5 loss in 2 half-moves
16 K6d5 loss in 2 half-moves
17 K6d6 loss in 2 half-moves
18 Kb7 loss in 2 half-moves
19 Kc7 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd7 loss in 2 half-moves
22 Ra4 loss in 2 half-moves