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

EGTB: win in 4 half-moves

# move score
1 Re6 win in 3 half-moves
2 Re8 win in 3 half-moves
3 K6a7 draw
4 K6b7 draw
5 K8a7 draw
6 K8b7 draw
7 Kb6 draw
8 Kb8 draw
9 Rc1 draw
10 Rd1 draw
11 Re7 draw
12 Rf1 draw
13 Rg1 draw
14 Rh1 draw
15 Ka5 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Ra1 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Re2 loss in 2 half-moves
20 Re3 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Re5 loss in 2 half-moves