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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kf8 win in 5 half-moves
3 Ra1 draw
4 Rb2 draw
5 Rb6 draw
6 Rc1 draw
7 Rd1 draw
8 Re1 draw
9 Kf7 loss in 2 half-moves
10 Kgg7 loss in 2 half-moves
11 Kgh7 loss in 2 half-moves
12 Khg7 loss in 2 half-moves
13 Khh7 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh1 loss in 2 half-moves