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

EGTB: win in 2 half-moves

# move score
1 Rb2 win in 1 half-moves
2 Rf6 win in 1 half-moves
3 Rb7 draw
4 K5a6 loss in 2 half-moves
5 K7a6 loss in 2 half-moves
6 Ka4 loss in 2 half-moves
7 Ka8 loss in 2 half-moves
8 Kb4 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Ra6 loss in 2 half-moves
11 Rb1 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rd6 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Rg6 loss in 2 half-moves
19 Rh6 loss in 2 half-moves
20 Kb7 loss in 1 half-moves
21 Kb8 loss in 1 half-moves
22 Rb8 loss in 1 half-moves