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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Rf5 win in 3 half-moves
3 Kb8 win in 5 half-moves
4 Rf7 win in 9 half-moves
5 Ka3 draw
6 Ka5 draw
7 Kb3 draw
8 Kb4 draw
9 Kb5 draw
10 Kd7 draw
11 Kd8 draw
12 Rd8 draw
13 Re8 draw
14 Rf4 draw
15 Rf6 draw
16 Kc7 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves