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

EGTB: win in 4 half-moves

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