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

EGTB: win in 2 half-moves

# move score
1 Rh8 win in 1 half-moves
2 Kb7 draw
3 Kd7 draw
4 Ra8 draw
5 Rb6 draw
6 Rc8 draw
7 Kc6 loss in 8 half-moves
8 Kc8 loss in 6 half-moves
9 Kd6 loss in 6 half-moves
10 Rb5 loss in 6 half-moves
11 Rb7 loss in 6 half-moves
12 Kb6 loss in 4 half-moves
13 Kd8 loss in 4 half-moves
14 Rb1 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves