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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ka3 draw
3 Ka4 draw
4 Kb3 draw
5 Kc6 draw
6 Kc7 draw
7 Kc8 draw
8 Kd6 draw
9 Kd8 draw
10 Ke6 draw
11 Ke7 draw
12 Ke8 draw
13 Ra1 draw
14 Ra4 draw
15 Ra6 draw
16 Ra7 draw
17 Ra8 draw
18 Rb5 draw
19 Rg5 draw
20 Rh5 draw
21 Kc3 loss in 2 half-moves
22 Kc4 loss in 2 half-moves
23 Kc5 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Ra3 loss in 2 half-moves
26 Rc5 loss in 2 half-moves
27 Rd5 loss in 2 half-moves
28 Re5 loss in 2 half-moves
29 Rf5 loss in 2 half-moves