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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kd2 draw
3 Kd3 draw
4 Kd4 draw
5 Ke2 draw
6 Ke4 draw
7 Kf2 draw
8 Kf3 draw
9 Kf4 draw
10 Rb8 draw
11 Rc2 draw
12 Rc3 draw
13 Rc4 draw
14 Rc5 draw
15 Rc6 draw
16 Rc7 draw
17 Rd8 draw
18 Re8 draw
19 Rf8 draw
20 Rh8 draw
21 Ra8 loss in 2 half-moves
22 Rc1 loss in 2 half-moves