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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Ra2 draw
3 Rc2 draw
4 Rd2 draw
5 Rg5 draw
6 Rg7 draw
7 Rg8 draw
8 Rh2 draw
9 K1a2 loss in 2 half-moves
10 K1b2 loss in 2 half-moves
11 K3a2 loss in 2 half-moves
12 K3b2 loss in 2 half-moves
13 Ka4 loss in 2 half-moves
14 Kb1 loss in 2 half-moves
15 Kb3 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Re2 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rg6 loss in 2 half-moves