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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Kd1 draw
3 Kf1 draw
4 Kg1 draw
5 Ra8 draw
6 Rb2 draw
7 Rb3 draw
8 Rb7 draw
9 Rc8 draw
10 Rd8 draw
11 Rh8 draw
12 Kd2 loss in 2 half-moves
13 Ke2 loss in 2 half-moves
14 Kf2 loss in 2 half-moves
15 Kg2 loss in 2 half-moves
16 Kh2 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rb6 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves