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

EGTB: win in 2 half-moves

# move score
1 Re7 win in 1 half-moves
2 Kb7 draw
3 Ra8 draw
4 Rg7 draw
5 Rh7 draw
6 K5b5 loss in 2 half-moves
7 K5b6 loss in 2 half-moves
8 K6b5 loss in 2 half-moves
9 K6b6 loss in 2 half-moves
10 Ka4 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Rb7 loss in 2 half-moves
13 Rc7 loss in 2 half-moves
14 Rd7 loss in 2 half-moves
15 Rf7 loss in 2 half-moves