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 Rg7 win in 3 half-moves
4 Ka5 draw
5 Ka6 draw
6 Ka7 draw
7 Kbb7 draw
8 Kbc7 draw
9 Kcb7 draw
10 Kcc7 draw
11 Kd6 draw
12 Kd7 draw
13 Ra3 draw
14 Rb3 draw
15 Rf3 draw
16 Rg4 draw
17 Rg8 draw
18 Rh3 draw
19 Kbb5 loss in 2 half-moves
20 Kbc5 loss in 2 half-moves
21 Kcb5 loss in 2 half-moves
22 Kcc5 loss in 2 half-moves
23 Kd5 loss in 2 half-moves
24 Rc3 loss in 2 half-moves
25 Rd3 loss in 2 half-moves
26 Re3 loss in 2 half-moves
27 Rg1 loss in 2 half-moves
28 Rg2 loss in 2 half-moves