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

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Rb1 draw
3 Rb5 draw
4 Rb6 draw
5 Rb7 draw
6 Rc8 draw
7 Rd8 draw
8 Re8 draw
9 K7f7 loss in 2 half-moves
10 K7f8 loss in 2 half-moves
11 K7h7 loss in 2 half-moves
12 K7h8 loss in 2 half-moves
13 K8f7 loss in 2 half-moves
14 K8f8 loss in 2 half-moves
15 K8h7 loss in 2 half-moves
16 K8h8 loss in 2 half-moves
17 Kf6 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kh6 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rb4 loss in 2 half-moves