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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 win in 3 half-moves
3 Rb4 win in 3 half-moves
4 Rb5 draw
5 Rb6 draw
6 Rd7 draw
7 Re7 draw
8 Rf7 draw
9 Rh7 draw
10 Ka1 loss in 2 half-moves
11 Ka4 loss in 2 half-moves
12 Kaa2 loss in 2 half-moves
13 Kab2 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Kb4 loss in 2 half-moves
16 Kba2 loss in 2 half-moves
17 Kbb2 loss in 2 half-moves
18 Kc1 loss in 2 half-moves
19 Kc2 loss in 2 half-moves
20 Ra7 loss in 2 half-moves
21 Rb8 loss in 2 half-moves
22 Rc7 loss in 2 half-moves
23 Rg7 loss in 2 half-moves