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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 Ra5 draw
3 Ra6 draw
4 Rd7 draw
5 Re7 draw
6 Rf7 draw
7 Rh7 draw
8 Ka1 loss in 2 half-moves
9 Ka4 loss in 2 half-moves
10 Kaa2 loss in 2 half-moves
11 Kab3 loss in 2 half-moves
12 Kb1 loss in 2 half-moves
13 Kb4 loss in 2 half-moves
14 Kba2 loss in 2 half-moves
15 Kbb3 loss in 2 half-moves
16 Kc1 loss in 2 half-moves
17 Kc2 loss in 2 half-moves
18 Kc3 loss in 2 half-moves
19 Ra8 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rc7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves