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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kc4 draw
3 Kd1 draw
4 Kd2 draw
5 Kd4 draw
6 Kd5 draw
7 Ke2 draw
8 Kf2 draw
9 Rf2 draw
10 Rf3 draw
11 Rf4 draw
12 Rf5 draw
13 Rg1 draw
14 Rh1 draw
15 Kb5 loss in 2 half-moves
16 Kb6 loss in 2 half-moves
17 Kc6 loss in 2 half-moves
18 Kd6 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Rf8 loss in 2 half-moves