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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Ka6 draw
3 Ka7 draw
4 Ka8 draw
5 Kbb6 draw
6 Kbc7 draw
7 Kc8 draw
8 Kcb6 draw
9 Kcc7 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Rh8 draw
14 Kc5 loss in 1 half-moves
15 Kd5 loss in 1 half-moves
16 Kd6 loss in 1 half-moves
17 Kd7 loss in 1 half-moves
18 Re8 loss in 1 half-moves
19 Rf8 loss in 1 half-moves
20 Rg8 loss in 1 half-moves