When starting out, it is a good idea to figure out positions on the board from which there is no hope of winning, and then try to never give your opponent a board that is one step away from these losing positions.
Here is a "cheat sheet" that shows some losing positions. (Note that for the Caribou Contest, the minimum board dimension is 4 x 4.)
Here is another worksheet that can be used to keep track of the winning opening move for various sized Chomp games.
Thanks to Serge Mister for preparing both the losing positions and winning opening moves sheets.
Here is a "cheat sheet" that shows some losing positions. (Note that for the Caribou Contest, the minimum board dimension is 4 x 4.)
Here is another worksheet that can be used to keep track of the winning opening move for various sized Chomp games.
Thanks to Serge Mister for preparing both the losing positions and winning opening moves sheets.