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 draw
3 Rb7 draw
4 Rb8 draw
5 Rd6 draw
6 Re6 draw
7 Rf6 draw
8 Rg6 draw
9 Ka1 loss in 2 half-moves
10 Ka4 loss in 2 half-moves
11 Kaa2 loss in 2 half-moves
12 Kab2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Kba2 loss in 2 half-moves
16 Kbb2 loss in 2 half-moves
17 Kc1 loss in 2 half-moves
18 Kc2 loss in 2 half-moves
19 Ra6 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rc6 loss in 2 half-moves
23 Rh6 loss in 2 half-moves