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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Ra1 win in 5 half-moves
3 Rc1 draw
4 Rd1 draw
5 Re1 draw
6 Rh2 draw
7 Rh4 draw
8 Rh5 draw
9 Rh6 draw
10 K5b5 loss in 2 half-moves
11 K5b6 loss in 2 half-moves
12 K6b5 loss in 2 half-moves
13 K6b6 loss in 2 half-moves
14 Ka4 loss in 2 half-moves
15 Ka7 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Kb7 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh3 loss in 2 half-moves
21 Rh7 loss in 2 half-moves
22 Rh8 loss in 2 half-moves