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

EGTB: win in 4 half-moves

# move score
1 Re7 win in 3 half-moves
2 Re8 win in 3 half-moves
3 Rd3 draw
4 Re2 draw
5 Re5 draw
6 Re6 draw
7 Rh3 draw
8 Ka7 loss in 2 half-moves
9 Ka8 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Ra3 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rc3 loss in 2 half-moves
16 Re1 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf3 loss in 2 half-moves
19 Rg3 loss in 2 half-moves