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 Rg8 win in 3 half-moves
3 Rg6 win in 5 half-moves
4 Rg7 win in 5 half-moves
5 Rb1 draw
6 Rc1 draw
7 Rd1 draw
8 Rg4 draw
9 Rh1 draw
10 K6b6 loss in 2 half-moves
11 K6b7 loss in 2 half-moves
12 K6d6 loss in 2 half-moves
13 K6d7 loss in 2 half-moves
14 K7b6 loss in 2 half-moves
15 K7b7 loss in 2 half-moves
16 K7d6 loss in 2 half-moves
17 K7d7 loss in 2 half-moves
18 Kb5 loss in 2 half-moves
19 Kb8 loss in 2 half-moves
20 Kc5 loss in 2 half-moves
21 Kc8 loss in 2 half-moves
22 Kd5 loss in 2 half-moves
23 Kd8 loss in 2 half-moves
24 Ra1 loss in 2 half-moves
25 Re1 loss in 2 half-moves
26 Rf1 loss in 2 half-moves
27 Rg2 loss in 2 half-moves
28 Rg3 loss in 2 half-moves