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 Rb8 draw
3 Rc7 draw
4 Rd7 draw
5 Re7 draw
6 Rf7 draw
7 Ka1 loss in 2 half-moves
8 Ka4 loss in 2 half-moves
9 Kaa2 loss in 2 half-moves
10 Kab3 loss in 2 half-moves
11 Kb1 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Kba2 loss in 2 half-moves
14 Kbb3 loss in 2 half-moves
15 Kc1 loss in 2 half-moves
16 Kc2 loss in 2 half-moves
17 Kc3 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Rb3 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rg7 loss in 2 half-moves
23 Rh7 loss in 2 half-moves