A fascinating math puzzle is what you need to clear your brains and stimulate them for further mental activity. Sum Numbers is what you need. The task is to remove all green blocks from the field. According to the rules, two blocks with the same value disappear when connected. This implies. That you need to create such blocks on the playing field, moving what is and connecting. When gluing tiles with different numerical symbols, they are combined into one, but a new tile with the sum of the numbers is obtained on the field. Think about your strategy before starting your Sum Numbers connections.