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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb5 draw
5 Rb7 draw
6 Rc1 draw
7 Rd1 draw
8 Ke1 loss in 2 half-moves
9 Ke2 loss in 2 half-moves
10 Kf2 loss in 2 half-moves
11 Kfg2 loss in 2 half-moves
12 Kg1 loss in 2 half-moves
13 Kg3 loss in 2 half-moves
14 Kg4 loss in 2 half-moves
15 Kh2 loss in 2 half-moves
16 Kh4 loss in 2 half-moves
17 Khg2 loss in 2 half-moves
18 Ra1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb6 loss in 2 half-moves
21 Rb8 loss in 2 half-moves