Motivated by a recent discovery of Supernova 2010gx and numerical results of Fryer et al .
( 2010 ) , we simulate light curves for several type I supernova models , enshrouded by dense circumstellar shells , or “ super-wind ” , rich in carbon and oxygen and having no hydrogen .
We demonstrate that the most luminous events like SN 2010gx can be explained by those models at moderate explosion energies \sim ( 2 \div 3 ) foe if the total mass of SN ejecta and a shell is \sim ( 3 \div 5 ) M _ { \odot } and the radius of the shell is \sim 10 ^ { 16 } cm .