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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kd6 draw
5 Kd7 draw
6 Rg1 draw
7 Kb2 loss in 2 half-moves
8 Kb3 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Kc4 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kc7 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Rd3 loss in 2 half-moves
19 Re3 loss in 2 half-moves
20 Rf3 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rg4 loss in 2 half-moves
23 Rg5 loss in 2 half-moves
24 Rg6 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh3 loss in 2 half-moves