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 Rc7 win in 11 half-moves
3 Ka8 draw
4 Kb2 draw
5 Kb3 draw
6 Kb7 draw
7 Kc4 draw
8 Kc7 draw
9 Kc8 draw
10 Ra1 draw
11 Ra3 draw
12 Ra5 draw
13 Ra6 draw
14 Ra8 draw
15 Rb7 draw
16 Rh7 draw
17 Kc2 loss in 2 half-moves
18 Kd2 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra4 loss in 2 half-moves
23 Rd7 loss in 2 half-moves
24 Re7 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rg7 loss in 2 half-moves