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

EGTB: win in 4 half-moves

# move score
1 Ra1 win in 3 half-moves
2 Rc1 win in 5 half-moves
3 Re8 win in 5 half-moves
4 Kaa7 draw
5 Kab7 draw
6 Kba7 draw
7 Kbb7 draw
8 Rb1 draw
9 Rd1 draw
10 Re2 draw
11 Re3 draw
12 Re4 draw
13 Kc7 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Re5 loss in 2 half-moves
16 Re6 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh1 loss in 2 half-moves