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

EGTB: win in 4 half-moves

# move score
1 Re8 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 Rf8 win in 5 half-moves
4 Ra8 draw
5 Rb3 draw
6 Rb7 draw
7 Rd8 draw
8 Rh8 draw
9 Ke3 loss in 2 half-moves
10 Ke4 loss in 2 half-moves
11 Ke5 loss in 2 half-moves
12 Kf3 loss in 2 half-moves
13 Kf5 loss in 2 half-moves
14 Kg3 loss in 2 half-moves
15 Kg4 loss in 2 half-moves
16 Kg5 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rc8 loss in 2 half-moves