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

EGTB: win in 2 half-moves

# move score
1 Rg6 win in 1 half-moves
2 Rb8 win in 3 half-moves
3 K6a7 draw
4 K6b7 draw
5 K8a7 draw
6 K8b7 draw
7 Ka5 draw
8 Kb5 draw
9 Kb8 draw
10 Rb1 draw
11 Rb2 draw
12 Rb7 draw
13 Rc6 draw
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Re6 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rh6 loss in 2 half-moves