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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Kab7 win in 7 half-moves
3 Kb5 win in 7 half-moves
4 Rb7 win in 7 half-moves
5 Kaa7 draw
6 Kbb7 draw
7 Ka5 loss in 2 half-moves
8 Ka6 loss in 2 half-moves
9 Kba7 loss in 2 half-moves
10 Kc5 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rh8 loss in 2 half-moves