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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb8 win in 3 half-moves
3 Rb6 win in 7 half-moves
4 Ka7 draw
5 Kab7 draw
6 Kb5 draw
7 Kb6 draw
8 Kb8 draw
9 Kc5 draw
10 Kc7 draw
11 Kcb7 draw
12 Kd6 draw
13 Kd7 draw
14 Ra1 draw
15 Rb5 draw
16 Rc1 draw
17 Rd1 draw
18 Rh1 draw
19 Kd5 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb4 loss in 2 half-moves
23 Re1 loss in 2 half-moves
24 Rf1 loss in 2 half-moves
25 Rg1 loss in 2 half-moves