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

EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Rg5 win in 3 half-moves
3 Ra8 win in 5 half-moves
4 Rb8 win in 5 half-moves
5 Kb5 win in 9 half-moves
6 K2a3 draw
7 K2b3 draw
8 K4a3 draw
9 K4b3 draw
10 Ka1 draw
11 Ka5 draw
12 Kb1 draw
13 Kb2 draw
14 Kb4 draw
15 Rc8 draw
16 Rg3 draw
17 Rg6 draw
18 Rg7 draw
19 Rh8 draw
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rf8 loss in 2 half-moves
23 Rg1 loss in 2 half-moves
24 Rg2 loss in 2 half-moves