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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Ka3 draw
3 Ka6 draw
4 Kb6 draw
5 Ra1 draw
6 Rc2 draw
7 Rc7 draw
8 Rg1 draw
9 Rh1 draw
10 K4b4 loss in 2 half-moves
11 K4b5 loss in 2 half-moves
12 K5b4 loss in 2 half-moves
13 K5b5 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Rc3 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 Rd1 loss in 2 half-moves
21 Re1 loss in 2 half-moves
22 Rf1 loss in 2 half-moves