# -----------------------------------------------------------------
# Write your entire commit message above this line.
# 
# The first line should be a quick description of what you changed.
# Then leave a blank line. 
# Then, taking as many lines as you want, answer the questions 
# corresponding to your checkpoint. 
#
# Checkpoint 1: 
# - This is the first time you have been asked to read a substantial amount
#   of code written by someone else. What was this experience like for you? 
#   Did you find any strategies which made it easier to make sense of the code?
#
# Checkpoint 2: 
# - Describe the strategy you used to check for a winner. 
#
# Checkpoint 3: 
# - Playing tic-tac-toe is pretty easy, even for children, but it takes a lot
#   of work to get a computer to play well. How did your awareness of your 
#   own cognition change as you worked on this lab?