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 Ka6 draw
3 Ka7 draw
4 Ka8 draw
5 Kb3 draw
6 Kb4 draw
7 Kb6 draw
8 Kb8 draw
9 Kc3 draw
10 Kd3 draw
11 Kd4 draw
12 Rg1 draw
13 Rg2 draw
14 Rg3 draw
15 Rg5 draw
16 Rh4 draw
17 Kc5 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Kc7 loss in 2 half-moves
20 Kc8 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rg8 loss in 2 half-moves