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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Re8 draw
3 Rf2 draw
4 Rf4 draw
5 Rf5 draw
6 Rf6 draw
7 Ka6 loss in 2 half-moves
8 Ka8 loss in 2 half-moves
9 Kab7 loss in 2 half-moves
10 Kab8 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kcb7 loss in 2 half-moves
14 Kcb8 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf3 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves