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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Kab5 draw
3 Rb4 draw
4 Ka7 loss in 2 half-moves
5 Kab7 loss in 2 half-moves
6 Kc5 loss in 2 half-moves
7 Kc7 loss in 2 half-moves
8 Kcb5 loss in 2 half-moves
9 Kcb7 loss in 2 half-moves
10 Kd5 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rb8 loss in 2 half-moves