Flipping puzzle

Question

This is a single player game which is played on a 3x3 table, each cell contains a value of 0 or 1. The player plays by performing "upside down" moves (flipping moves), where the player selects one of the cells and the contents of the cell as well as of all neighboring cells is reversed. (The "inversion" process e converts 0 to 1 and 1 to 0. Request. Enter a code that reads as input the initial state of table 3x3 and generates as a result a s

Answer 1

Check out checkers code. Seems similar to me