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

EGTB: win in 4 half-moves

# move score
1 Rg3 win in 3 half-moves
2 Ra3 draw
3 Rd4 draw
4 Rd5 draw
5 Rd6 draw
6 Rd8 draw
7 Re3 draw
8 Rf3 draw
9 K3g3 loss in 2 half-moves
10 K3g4 loss in 2 half-moves
11 K4g3 loss in 2 half-moves
12 K4g4 loss in 2 half-moves
13 Kg2 loss in 2 half-moves
14 Kg5 loss in 2 half-moves
15 Kh2 loss in 2 half-moves
16 Kh5 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Rd2 loss in 2 half-moves
21 Rd7 loss in 2 half-moves