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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kc6 win in 3 half-moves
4 Kd6 win in 3 half-moves
5 R7a5 win in 3 half-moves
6 R7a6 win in 3 half-moves
7 Ra1 win in 3 half-moves
8 Ra8 win in 3 half-moves
9 Rb4 win in 3 half-moves
10 Rb7 win in 3 half-moves
11 Rc4 win in 3 half-moves
12 Rc7 win in 3 half-moves
13 Rd4 win in 3 half-moves
14 Rd7 win in 3 half-moves
15 Re4 win in 3 half-moves
16 Re7 win in 3 half-moves
17 Rh4 win in 3 half-moves
18 Rh7 win in 3 half-moves
19 Kb4 win in 5 half-moves
20 Kc4 win in 5 half-moves
21 R4a5 win in 5 half-moves
22 R4a6 win in 5 half-moves
23 Kd4 win in 7 half-moves
24 Kd5 win in 7 half-moves
25 Ra2 loss in 2 half-moves
26 Ra3 loss in 2 half-moves
27 Rf4 loss in 2 half-moves
28 Rf7 loss in 2 half-moves
29 Rg4 loss in 2 half-moves
30 Rg7 loss in 2 half-moves