[Retros] Infinite length HAP problem
flab at EECS.Berkeley.EDU
Sat Dec 1 14:26:08 EST 2007
On Sat, 1 Dec 2007, Bernd Gräfrath wrote:
> Mario Richter has confirmed that it is C+ (many thanks again!), and he
> also points out that it is the longest HAP-problem so far.
Here's an infinite one:
1.A A 2.A A 3.AxP AxP 4.AxA AxA 5.A A 6.AxP AxP 7.AxA AxA 8.A A 9.HxA HxA
10.A A 11.A A 12.A A 13.A A ...
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