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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka7 draw
3 Kb7 draw
4 Kb8 draw
5 Kc6 draw
6 Kc7 draw
7 Kc8 draw
8 Kd6 draw
9 Kd8 draw
10 Ke6 draw
11 Ke7 draw
12 Ke8 draw
13 Ra4 draw
14 Rb3 draw
15 Rb5 draw
16 Rb6 draw
17 Rb7 draw
18 Rh4 draw
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rg4 loss in 2 half-moves