Some simple game variations I came up with mixing card games with chess and Go:

Explosive Go - points scored in hands of a card game equal the number of stones that a player gets to place in his next turn of Go.

Chess On The Left Hand Path - Starting with half the normal number of chess pieces, players put their lost pieces back into play by winning rounds of a card game. (Dead pieces are kept in a row off the board, placed into battle starting with the one furthest to the right and working back to the left.)