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

EGTB: win in 4 half-moves

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