[Home]Hughes Difficulty Rating

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Invented by great theoretician but mediocre player Ernest Mipplington, this is the standard way of measuring move difficulty. A simple move has HDR 0.2, a typical shunt around 1.2, 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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Edited September 23, 2004 8:22 pm by JLE (diff)