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 Rd7 win in 3 half-moves
3 Rb7 win in 5 half-moves
4 Kb5 win in 7 half-moves
5 Kc6 win in 7 half-moves
6 Kc7 win in 7 half-moves
7 Kc8 win in 7 half-moves
8 Kd5 win in 7 half-moves
9 Rc7 win in 7 half-moves
10 Kb4 win in 9 half-moves
11 Kc4 win in 9 half-moves
12 Kd4 win in 9 half-moves
13 Kd7 win in 9 half-moves
14 Ke7 win in 9 half-moves
15 Ke8 win in 9 half-moves
16 Ra8 win in 9 half-moves
17 Kd6 draw
18 Ra2 draw
19 Ra5 draw
20 Re7 draw
21 Rf7 draw
22 Ra1 loss in 2 half-moves
23 Ra3 loss in 2 half-moves
24 Ra4 loss in 2 half-moves
25 Ra6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves