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

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 Rb4 draw
4 Rc4 draw
5 Rd4 draw
6 Rf4 draw
7 Rg1 draw
8 Rg5 draw
9 Rg6 draw
10 Ka7 loss in 2 half-moves
11 Ka8 loss in 2 half-moves
12 Kbb7 loss in 2 half-moves
13 Kbc7 loss in 2 half-moves
14 Kcb7 loss in 2 half-moves
15 Kcc7 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rg2 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh4 loss in 2 half-moves