c7 : flat 3D Seven puzzle; mix/restore + solver
c9 : reverse the order: 9 irregular blocks+solver
c9r: restore the order: 9 irregular blocks+solver
caz: flat 3D Alphabet slider; mix/restore+solver
cdd: DirtyDozen sliding blocks + solver
chio: Hole In One Slider
chio4: Hole In One + 4 Slider
cpan: Panama Canal slider puzzle
crush: Traffic Rush puzzle; garage escape+solver
cslid: Klotski style Slider puzzles + solver
csok: Sokoban + solver
rpn: Calculator--Reverse Polish Notation
cfrog: Frogger Arcade Game
cpac: Pacman Arcade Game
cinv: SpaceInvaders Arcade Game
