aggression
alien
alone
battle
battlefield
brain
challenge
checkboard
chess
chess board
competition
competitive
concept
conquering
creative
defeat
defense
enemy
fight
game
hero
idea
individuality
intelligence
kamikaze
law
leader
marble
mind
negotiate
one
parliamentary
pawn
piece
plan
play
position
power
rivalry
single
sport
strategic
strength
success
summit
supremacy
tactics
talks
victory
win