[Home]Hughes Difficulty Rating

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Invented by great theoretician but mediocre player [Ernest Mipplington]?, who also developed the complementary Mipplington Convention, this is the standard way of measuring move difficulty. A simple move has a Hughes difficulty rating (HDR) of approximately 0.2, a typical shunt around 1.2 and an average Czukay Manipulation in the range 3.7 to 4.9. The hardest move ever played occurred in the semi-final of the 1976 World Championship. It took the Andorran Champion (whose name has sadly been lost) from Amersham? to [Chalk Farm]? with all the diagonals closed, six lines quartered, fifty-two stations bulkheaded and sixteen more blocked. It took him almost two hours to work out. The HDR was later found to be 396.5.


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Last edited September 15, 2007 9:08 pm by Simons Mith (diff)