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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Rb3 win in 3 half-moves
4 Ka6 win in 5 half-moves
5 Ka3 draw
6 Ra3 draw
7 Rc1 draw
8 Rc2 draw
9 Rc7 draw
10 Rg3 draw
11 Rh3 draw
12 K4b4 loss in 2 half-moves
13 K4b5 loss in 2 half-moves
14 K5b4 loss in 2 half-moves
15 K5b5 loss in 2 half-moves
16 Rc4 loss in 2 half-moves
17 Rc5 loss in 2 half-moves
18 Rc6 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Re3 loss in 2 half-moves
22 Rf3 loss in 2 half-moves