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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Rb3 draw
3 Rd1 draw
4 Rd2 draw
5 Rd5 draw
6 Rf3 draw
7 Kg6 loss in 2 half-moves
8 Kg7 loss in 2 half-moves
9 Kg8 loss in 2 half-moves
10 Kh6 loss in 2 half-moves
11 Kh8 loss in 2 half-moves
12 Ra3 loss in 2 half-moves
13 Rc3 loss in 2 half-moves
14 Rd4 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rh3 loss in 2 half-moves