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

EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Rg6 win in 3 half-moves
3 Ra8 win in 5 half-moves
4 Rb8 win in 7 half-moves
5 Rc8 win in 7 half-moves
6 Kbc6 win in 9 half-moves
7 Kd6 win in 9 half-moves
8 Kcc6 win in 11 half-moves
9 Ka4 draw
10 Ka5 draw
11 Ka6 draw
12 Kbb6 draw
13 Kcb6 draw
14 Kd5 draw
15 Rf8 draw
16 Rg7 draw
17 Rh8 draw
18 Kbb4 loss in 2 half-moves
19 Kbc4 loss in 2 half-moves
20 Kcb4 loss in 2 half-moves
21 Kcc4 loss in 2 half-moves
22 Kd4 loss in 2 half-moves
23 Rd8 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rg1 loss in 2 half-moves
26 Rg2 loss in 2 half-moves
27 Rg3 loss in 2 half-moves
28 Rg4 loss in 2 half-moves