8
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2
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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 Kb6 win in 3 half-moves
2 Kd6 win in 3 half-moves
3 Rd8 win in 3 half-moves
4 Kf7 win in 7 half-moves
5 Kf8 win in 7 half-moves
6 Kc6 win in 9 half-moves
7 Kc4 win in 11 half-moves
8 Kd8 win in 11 half-moves
9 Kb4 win in 13 half-moves
10 Kb5 win in 13 half-moves
11 Kd4 win in 13 half-moves
12 Kd5 win in 13 half-moves
13 Ra8 win in 15 half-moves
14 Rb8 win in 15 half-moves
15 Kd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Rc6 loss in 2 half-moves
18 Rc7 loss in 2 half-moves