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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rc3 draw
3 Rd3 draw
4 Re3 draw
5 Rf3 draw
6 Rg4 draw
7 Rg5 draw
8 Rg6 draw
9 Rg7 draw
10 K2b2 loss in 2 half-moves
11 K2b3 loss in 2 half-moves
12 K3b2 loss in 2 half-moves
13 K3b3 loss in 2 half-moves
14 Ka1 loss in 2 half-moves
15 Ka4 loss in 2 half-moves
16 Kb1 loss in 2 half-moves
17 Kb4 loss in 2 half-moves
18 Rg1 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh3 loss in 2 half-moves