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 5 half-moves
3 Rc1 draw
4 Re5 draw
5 Re6 draw
6 Rh1 draw
7 Kb7 loss in 2 half-moves
8 Kb8 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Kd7 loss in 2 half-moves
11 Kd8 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rd1 loss in 2 half-moves
15 Re2 loss in 2 half-moves
16 Re3 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves