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 Ra8 draw
3 Rb4 draw
4 Rb5 draw
5 Rb6 draw
6 Rb7 draw
7 Ke7 loss in 2 half-moves
8 Ke8 loss in 2 half-moves
9 Kff7 loss in 2 half-moves
10 Kfg7 loss in 2 half-moves
11 Kgf7 loss in 2 half-moves
12 Kgg7 loss in 2 half-moves
13 Kh7 loss in 2 half-moves
14 Kh8 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves