英文關鍵字
black
board
challenge
checkered
chess
chessboard
child
competition
competitor
concept
desk
dof
elderly
figure
finger
focus
forward
free
game
grandmother
hand
hold
kid
king
leader
leadership
male
man
mental
move
old
opponent
outdoors
park
people
piece
plastic
playing
power
progress
senior
shallow
strategy
strength
success
successful
support
table
time
white