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

EGTB: win in 4 half-moves

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