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

EGTB: win in 2 half-moves

# move score
1 Rg4 win in 1 half-moves
2 Kb5 draw
3 Rc4 draw
4 Rd4 draw
5 Re4 draw
6 Rf5 draw
7 Rf6 draw
8 Rf7 draw
9 Rh4 draw
10 Rf8 loss in 6 half-moves
11 Ka6 loss in 4 half-moves
12 Kb6 loss in 4 half-moves
13 Ka4 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf3 loss in 2 half-moves
19 Rf2 loss in 1 half-moves