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

EGTB: win in 4 half-moves

# move score
1 Rh1 win in 3 half-moves
2 Rh3 win in 5 half-moves
3 Ra7 draw
4 Rb7 draw
5 Rc7 draw
6 Re7 draw
7 Rh2 draw
8 Rh4 draw
9 Rh5 draw
10 Rh6 draw
11 K1b1 loss in 2 half-moves
12 K1b2 loss in 2 half-moves
13 K2b1 loss in 2 half-moves
14 K2b2 loss in 2 half-moves
15 Ka3 loss in 2 half-moves
16 Kb3 loss in 2 half-moves
17 Rd7 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rg7 loss in 2 half-moves
20 Rh8 loss in 2 half-moves