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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kb6 win in 7 half-moves
3 Ra8 win in 7 half-moves
4 K4b4 draw
5 K4b5 draw
6 K5b4 draw
7 K5b5 draw
8 Ka3 draw
9 Ka6 draw
10 Kb3 draw
11 Rc8 draw
12 Rd8 draw
13 Re1 draw
14 Re2 draw
15 Re6 draw
16 Re7 draw
17 Rf8 draw
18 Re3 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Re5 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves