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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Rb8 win in 1 half-moves
3 Rb6 draw
4 Rb7 draw
5 Ra1 loss in 18 half-moves
6 Kb4 loss in 14 half-moves
7 Kb2 loss in 6 half-moves
8 Kb3 loss in 4 half-moves
9 Rc1 loss in 4 half-moves
10 Re1 loss in 4 half-moves
11 Kc2 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Rf1 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rh1 loss in 2 half-moves