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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ra4 draw
3 Rc4 draw
4 Rd4 draw
5 Re4 draw
6 Rh1 draw
7 Rh2 draw
8 Rh3 draw
9 Rh8 draw
10 Kb5 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Kcd5 loss in 2 half-moves
16 Kcd6 loss in 2 half-moves
17 Kcd7 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Ked5 loss in 2 half-moves
21 Ked6 loss in 2 half-moves
22 Ked7 loss in 2 half-moves
23 Kf5 loss in 2 half-moves
24 Kf6 loss in 2 half-moves
25 Kf7 loss in 2 half-moves
26 Rf4 loss in 2 half-moves
27 Rg4 loss in 2 half-moves
28 Rh5 loss in 2 half-moves
29 Rh6 loss in 2 half-moves
30 Rh7 loss in 2 half-moves