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

EGTB: win in 4 half-moves

# move score
1 Ra3 win in 3 half-moves
2 Rb3 win in 3 half-moves
3 Re8 win in 3 half-moves
4 Re6 win in 5 half-moves
5 K7b7 draw
6 K7b8 draw
7 K8b7 draw
8 K8b8 draw
9 Ka6 draw
10 Kb6 draw
11 Rc3 draw
12 Rd3 draw
13 Re4 draw
14 Re5 draw
15 Re7 draw
16 Rf3 draw
17 Re1 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rh3 loss in 2 half-moves