Puzzle: create a Pentagon with rule and compass <EOM>

The title sums it all.   P.S. And, as a Christmas bonus, here is a nice chess puzzle. In the above diagram you must add the two missing kings in such a way that White, who is on the move, can deliver immediate mate, i.e. mate in one move. [source: ChessBase]


Flash-based harddisks – the new laptop feature to look for

A review in ComputerWorld features the new Samsung’s 64 GB Flash drive: Samsung rates the drive with a read speed of 100MB/sec and write speed of 80 MB/sec, compared to 59MB/sec and 60MB/sec (respectively) for a traditional 2.5" hard drive. We ran several benchmarks. In our HD Tune performance tests, the drive turned in an…