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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 K1b1 draw
3 K1b2 draw
4 K2b1 draw
5 K2b2 draw
6 Re8 draw
7 Rf4 draw
8 Rg8 draw
9 Rh8 draw
10 Ka3 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rf2 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rf7 loss in 2 half-moves