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 K6a7 draw
3 K8a7 draw
4 Kc5 draw
5 Ra6 draw
6 Ra7 draw
7 Ra8 draw
8 Re5 draw
9 Rf5 draw
10 Rg5 draw
11 Ka6 loss in 2 half-moves
12 Ka8 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rc5 loss in 2 half-moves
21 Rd5 loss in 2 half-moves
22 Rh5 loss in 2 half-moves
23 K6b7 loss in 1 half-moves
24 K6c7 loss in 1 half-moves
25 K8b7 loss in 1 half-moves
26 K8c7 loss in 1 half-moves