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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Re2 win in 3 half-moves
3 Rb7 draw
4 Rd7 draw
5 Re3 draw
6 Re4 draw
7 Re5 draw
8 Re6 draw
9 Rf7 draw
10 Ke1 loss in 2 half-moves
11 Ke2 loss in 2 half-moves
12 Kf2 loss in 2 half-moves
13 Kg1 loss in 2 half-moves
14 Kg2 loss in 2 half-moves
15 Ra7 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rg7 loss in 2 half-moves
19 Rh7 loss in 2 half-moves