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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 K4a5 draw
3 K4b5 draw
4 K6a5 draw
5 K6b5 draw
6 Ka3 draw
7 Kb3 draw
8 Kb7 draw
9 Rb8 draw
10 Rc8 draw
11 Kb4 loss in 2 half-moves
12 Kb6 loss in 2 half-moves
13 Ra7 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves