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

EGTB: win in 4 half-moves

# move score
1 Rh8 win in 3 half-moves
2 K1g1 draw
3 K1g2 draw
4 K2g1 draw
5 K2g2 draw
6 Ra8 draw
7 Rb8 draw
8 Rc8 draw
9 Rd4 draw
10 Kg3 loss in 2 half-moves
11 Kh3 loss in 2 half-moves
12 Rd1 loss in 2 half-moves
13 Rd2 loss in 2 half-moves
14 Rd3 loss in 2 half-moves
15 Rd5 loss in 2 half-moves
16 Rd6 loss in 2 half-moves
17 Rd7 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves