[Retros] HAP problems up to ply 7

Joost de Heer joost at sanguis.xs4all.nl
Sat Dec 1 07:54:01 EST 2007



> a3: (requires at least 8 plies)


Does this work?

1. P P 2. A HxP 3. AxP HxP 4. AxP AxA

Joost


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