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 Kc6 win in 3 half-moves
3 Kc8 win in 3 half-moves
4 Kb8 win in 5 half-moves
5 Kc7 win in 5 half-moves
6 Ka6 draw
7 Ka8 draw
8 Rb5 draw
9 Rc5 draw
10 Rd5 draw
11 Re5 draw
12 Rf5 draw
13 R5a6 loss in 2 half-moves
14 R7a6 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 Ra8 loss in 2 half-moves
20 Rg5 loss in 2 half-moves
21 Rh5 loss in 2 half-moves