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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Ka6 draw
3 Kaa4 draw
4 Kab4 draw
5 Kb5 draw
6 Kba4 draw
7 Kbb4 draw
8 Kc3 draw
9 Ra7 draw
10 Rb7 draw
11 Rc4 draw
12 Rc8 draw
13 Ka2 loss in 2 half-moves
14 Ka3 loss in 2 half-moves
15 Kb2 loss in 2 half-moves
16 Kc2 loss in 2 half-moves
17 Rc1 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rc5 loss in 2 half-moves
21 Rc6 loss in 2 half-moves
22 Rd7 loss in 2 half-moves
23 Re7 loss in 2 half-moves
24 Rf7 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rh7 loss in 2 half-moves
27 Kc4 loss in 1 half-moves