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

EGTB: win in 4 half-moves

# move score
1 K2b2 win in 3 half-moves
2 K2b3 win in 3 half-moves
3 K3b2 win in 3 half-moves
4 K3b3 win in 3 half-moves
5 Kb1 win in 3 half-moves
6 Rb2 win in 3 half-moves
7 Rc1 win in 7 half-moves
8 Ka1 draw
9 Ka4 draw
10 Kb4 draw
11 Rc6 draw
12 Rd2 draw
13 Rh2 draw
14 Rc3 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rc5 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Re2 loss in 2 half-moves
20 Rf2 loss in 2 half-moves
21 Rg2 loss in 2 half-moves