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 Ra3 win in 5 half-moves
4 Ka7 draw
5 Ka8 draw
6 Kbb7 draw
7 Kbc7 draw
8 Kcb7 draw
9 Kcc7 draw
10 Kd7 draw
11 Kd8 draw
12 Re3 draw
13 Rf3 draw
14 Rg4 draw
15 Rg5 draw
16 Rg6 draw
17 Rh3 draw
18 Rb3 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rg2 loss in 2 half-moves