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 K5a6 draw
3 K5b6 draw
4 K7a6 draw
5 K7b6 draw
6 Ka4 draw
7 Ka8 draw
8 Kb8 draw
9 Ra1 draw
10 Ra2 draw
11 Rb3 draw
12 Rh3 draw
13 Kb5 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Rc3 loss in 2 half-moves
17 Rd3 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rg3 loss in 2 half-moves