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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Ka7 win in 5 half-moves
5 Kb7 win in 5 half-moves
6 Ke7 win in 9 half-moves
7 Ke8 win in 9 half-moves
8 Ka5 draw
9 Kb5 draw
10 Kb6 draw
11 Kf7 draw
12 Kg7 draw
13 Kg8 draw
14 Ra4 draw
15 Rb3 draw
16 Rb5 draw
17 Rc4 draw
18 Rd4 draw
19 Re4 draw
20 Rb1 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rf4 loss in 2 half-moves
23 Rg4 loss in 2 half-moves
24 Rh4 loss in 2 half-moves