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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Re8 win in 3 half-moves
3 Rg8 win in 3 half-moves
4 Rh8 win in 3 half-moves
5 Rb1 draw
6 Rb2 draw
7 Rb4 draw
8 Rc8 draw
9 Rf8 draw
10 Kd1 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Kef1 loss in 2 half-moves
14 Kef2 loss in 2 half-moves
15 Kg2 loss in 2 half-moves
16 Kgf1 loss in 2 half-moves
17 Kgf2 loss in 2 half-moves
18 Kh1 loss in 2 half-moves
19 Kh2 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb7 loss in 2 half-moves