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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 Rc7 win in 3 half-moves
2 Kaa8 draw
3 Kab7 draw
4 Kba8 draw
5 Kc7 draw
6 Kc8 draw
7 Rd7 draw
8 Re1 draw
9 Re6 draw
10 Re8 draw
11 Rf7 draw
12 Rg7 draw
13 Rh7 draw
14 Ka6 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Kbb7 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Re3 loss in 2 half-moves
20 Re4 loss in 2 half-moves
21 Re5 loss in 2 half-moves