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 Kc2 win in 3 half-moves
3 Ka4 win in 5 half-moves
4 Ka6 draw
5 Kc1 draw
6 Kc3 draw
7 Kd1 draw
8 Kd3 draw
9 Ke3 draw
10 Ra6 draw
11 Ra8 draw
12 Rc7 draw
13 Rd7 draw
14 Re7 draw
15 Rf7 draw
16 Kb5 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Ke1 loss in 2 half-moves
19 Ke2 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves