C for Chess C for Cancer C for Checkmate Treating cancer is like winning a chess game with the best possible strategy. CBC might resemble a pawn, but is all powerful. PET, looks to be a mighty king but is sadly allowed few steps. We need to understand the significance of each chess piece to stalemate, if not checkmate. Cancer Biology. Choosing Investigations Wisely. This comes directly from my heart to put the best foot forward to topple the worst ever hit disease inflicted to humans, the CANCER.