Discharging Rules
(RSST) The Four Colour Theorem, Neil Robertson, Daniel Sanders, Paul Seymour and Robin Thomas
Journal of Combinatorial Theory, Series B 70, 2-44 (1997), Article No. TB971750
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Rules:
of 32
Rules Source:
RSST
Steinberger
Centre X:
Y:
Increment Angle:
Magnification:
Reflect
Go To:
Unavoidable Configurations
Cartwheels
Extended Cartwheels