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1
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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 K7b7 draw
3 K7b8 draw
4 K8b7 draw
5 K8b8 draw
6 Ka6 draw
7 Kb6 draw
8 Rc8 draw
9 Rd8 draw
10 Rh2 draw
11 Rh6 draw
12 Rh7 draw
13 Re8 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg8 loss in 2 half-moves
16 Rh1 loss in 2 half-moves
17 Rh3 loss in 2 half-moves
18 Rh4 loss in 2 half-moves
19 Rh5 loss in 2 half-moves