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

EGTB: win in 2 half-moves

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