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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rc1 draw
3 Rc5 draw
4 Rc6 draw
5 Rc7 draw
6 Rd8 draw
7 Re8 draw
8 Rf8 draw
9 Rg8 draw
10 Rh8 draw
11 Kf1 loss in 2 half-moves
12 Kf2 loss in 2 half-moves
13 Kgh2 loss in 2 half-moves
14 Kgg2 loss in 1 half-moves
15 Khg2 loss in 1 half-moves
16 Khh2 loss in 1 half-moves
17 Ra8 loss in 1 half-moves
18 Rc2 loss in 1 half-moves
19 Rc3 loss in 1 half-moves
20 Rc4 loss in 1 half-moves