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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kbb3 draw
3 Kbb5 draw
4 Kcb3 draw
5 Kcb5 draw
6 Kcc3 draw
7 Kd3 draw
8 Kd4 draw
9 Rb2 draw
10 Rc1 draw
11 Ka3 loss in 2 half-moves
12 Ka4 loss in 2 half-moves
13 Ka5 loss in 2 half-moves
14 Kbc3 loss in 2 half-moves
15 Kbc5 loss in 2 half-moves
16 Kcc5 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ra1 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rh1 loss in 2 half-moves