It has two constructed forms, the first being regular with Schl�fli symbol { 3 5, 4 }, and the second with alternately labeled ( checkerboarded ) facets, with Schl�fli symbol { 3, 3, 3, 3, 3 1, 1 } or Coxeter symbol "'4 11 " '.
12.
It has two constructive forms, the first being regular with Schl�fli symbol { 3 6, 4 }, and the second with alternately labeled ( checkerboarded ) facets, with Schl�fli symbol { 3, 3, 3, 3, 3, 3 1, 1 } or Coxeter symbol "'5 11 " '.
13.
In March 2011, in response to the creation of a school shooter mod entitled " School Shooter : North American Tour 2012 ", developed by Checkerboarded Studios on Valve Corporation's Source engine, Thompson emailed Valve's managing director, Gabe Newell, demanding that the mod be removed, as he speculated that Valve played a part in the mod's development.
