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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Rf1 win in 3 half-moves
3 Rg1 win in 3 half-moves
4 Rh1 win in 3 half-moves
5 Rb2 draw
6 Rb5 draw
7 Rb6 draw
8 Rb7 draw
9 Rc1 draw
10 Rd1 draw
11 Ke6 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Ke8 loss in 2 half-moves
14 Kf6 loss in 2 half-moves
15 Kff8 loss in 2 half-moves
16 Kfg7 loss in 2 half-moves
17 Kg6 loss in 2 half-moves
18 Kgf8 loss in 2 half-moves
19 Kgg7 loss in 2 half-moves
20 Kh7 loss in 2 half-moves
21 Kh8 loss in 2 half-moves
22 Ra1 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rb4 loss in 2 half-moves
25 Rb8 loss in 2 half-moves