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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ra7 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 Ka3 draw
5 Ka5 draw
6 Rc1 draw
7 Rc8 draw
8 Rd7 draw
9 Rg7 draw
10 Kb3 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Rc2 loss in 2 half-moves
13 Rc3 loss in 2 half-moves
14 Rc4 loss in 2 half-moves
15 Rc5 loss in 2 half-moves
16 Rc6 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rh7 loss in 2 half-moves