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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 K6b7 draw
3 K7b7 draw
4 Ka5 draw
5 Ka8 draw
6 Kb8 draw
7 Rf7 draw
8 Rg7 draw
9 Rh2 draw
10 Rh6 draw
11 Rh8 draw
12 K6b6 loss in 2 half-moves
13 K7b6 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Rc7 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rh1 loss in 2 half-moves
19 Rh3 loss in 2 half-moves
20 Rh4 loss in 2 half-moves
21 Rh5 loss in 2 half-moves