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

EGTB: win in 8 half-moves

# move score
1 Re1 win in 7 half-moves
2 Re2 draw
3 Re8 draw
4 Rh7 draw
5 K2b2 loss in 2 half-moves
6 K2b3 loss in 2 half-moves
7 K3b2 loss in 2 half-moves
8 K3b3 loss in 2 half-moves
9 Ka1 loss in 2 half-moves
10 Ka4 loss in 2 half-moves
11 Kb1 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Ra7 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rc7 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Re5 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves