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 Kfg1 draw
3 Rc3 draw
4 Rc4 draw
5 Rc5 draw
6 Rc7 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 Kh2 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rc2 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Kfg2 loss in 1 half-moves
18 Khg1 loss in 1 half-moves
19 Khg2 loss in 1 half-moves