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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Rb1 draw
3 Rb2 draw
4 Rb3 draw
5 Rd4 draw
6 Rg4 draw
7 Rh4 draw
8 Ke7 loss in 2 half-moves
9 Ke8 loss in 2 half-moves
10 Kff7 loss in 2 half-moves
11 Kfg7 loss in 2 half-moves
12 Kgf7 loss in 2 half-moves
13 Kgg7 loss in 2 half-moves
14 Kh7 loss in 2 half-moves
15 Kh8 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Rf4 loss in 2 half-moves