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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 K3b4 loss in 1 half-moves
3 K3d3 loss in 1 half-moves
4 K3d4 loss in 1 half-moves
5 K4b4 loss in 1 half-moves
6 K4d3 loss in 1 half-moves
7 K4d4 loss in 1 half-moves
8 Kb2 loss in 1 half-moves
9 Kb5 loss in 1 half-moves
10 Kc2 loss in 1 half-moves
11 Kc5 loss in 1 half-moves
12 Kd2 loss in 1 half-moves
13 Kd5 loss in 1 half-moves
14 Ra3 loss in 1 half-moves
15 Rb2 loss in 1 half-moves
16 Rb4 loss in 1 half-moves
17 Rb5 loss in 1 half-moves
18 Rb6 loss in 1 half-moves
19 Rb7 loss in 1 half-moves
20 Rb8 loss in 1 half-moves