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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rb8 win in 7 half-moves
3 Rb3 draw
4 Rb4 draw
5 Rb5 draw
6 Rb6 draw
7 Rf1 draw
8 Rg1 draw
9 Rh1 draw
10 Kb7 loss in 2 half-moves
11 Kb8 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd7 loss in 2 half-moves
19 Kd8 loss in 2 half-moves
20 Ke2 loss in 2 half-moves
21 Ke3 loss in 2 half-moves
22 Ke4 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rc1 loss in 2 half-moves
26 Rd1 loss in 2 half-moves
27 Re1 loss in 2 half-moves