i have build tic tac toe 2 wide can't be destroy by a spam proof but have need a certain time to change player + a win detector who didn't work with it ,behind there have conditional adder for double dabble + mini door who are not very hard
-for tic tac toe : right click on noteblock to put your pawn and click on stone button to reset
-for win detector it's made of 2 module the green can be use alone , the purple is a memory input : place a block front of observator and it will be register (not the 2 observeur because (not to fast) just chose right observer is for cross and the left is for round (auto switch (when your place a block + auto reset when win) (not lose detection)
-condionnal adder : just turn on or turn off levers and see (there are panels with number)