main.js
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center = 4;
var testRandom = [
  [0,'x',2],
  ['o',4,5],
  [6,7,8],
  [0,'o',6],
  ['x',4,7],
  [2,5,8],
  [0,4,8],
  [2,4,6]
];

var testCheckMate = [
  ['o','x',2],
  [3,4,5],
  ['o',7,8],
  ['o',3,'o'],
  ['x','x',7],
  [2,5,8],
  [0,4,8],
  [2,'o',4]
];
var testSetup = [
  [0,1,2],
  [3,4,5],
  [6,7,8],
  [0,3,6],
  [1,4,7],
  [2,5,8],
  [0,4,8],
  [2,4,6]
];
(function() {
	var arr = testSetup;
	for (var k = 0; k < arr.length; k++) {
		for (var h = 0; h < arr[k].length; h++) {
			if ( arr[k][h] === 0 || arr[k][h] === 5 ) {
				arr[k][h] = 'o';
			}
			else if ( arr[k][h] === 2 || arr[k][h] === 7 ) {
				arr[k][h] = 'x';
			}
		}
	}
	secondLongNameArr = arr;
	// console.log(secondLongNameArr);
})();



   
var findSetupMove = function(arr) {
	// var arr = secondLongNameArr; // Paste the name of the array here
	var sortedTemp = [];
	var priority = 'x';
	var setupCheckmateAvai = []; //To store all available possibilities
	var setupBlockAvai = [];
	
	// Find duplicate
	var findDuplicate = function(result,curr,index,array){
		if ( array.indexOf(curr) !== index ) {
			result.push(curr);
		}
		if ( result.indexOf(4) >= 0 ) {
			return [4];
		}
		else {
			return ['random']; // This will be replace as a random number in [result]	
		}
	}
	
	for (var i = 0; i < arr.length; i++) {
			sortedTemp = arr[i].slice().sort(); // Make a copy of sorted child array
			console.log(sortedTemp);
			for (var j = 0; j < sortedTemp.length; j++) {
				if ( sortedTemp[2] === priority && typeof sortedTemp[2] === 'string' && typeof sortedTemp[1] === 'number'  ) {
					setupCheckmateAvai.push(sortedTemp[0],sortedTemp[1]);
					break;
				}
				else if ( sortedTemp[2] !== priority && typeof sortedTemp[2] === 'string' && typeof sortedTemp[1] === 'number' ) {
					setupBlockAvai.push(sortedTemp[0],sortedTemp[1]);
					break;
				}
			}
	}
	if (setupCheckmateAvai) {
		console.log( setupCheckmateAvai.reduce(findDuplicate,[])[0] );
	}
	else if ( !setupCheckmateAvai && setupBlockAvai ) {
		console.log( setupBlockAvai.reduce(findDuplicate,[])[0] );
	}
	else {
		console.log('No setup available!')
	}
	
	
	
	console.log(setupCheckmateAvai);
	console.log(setupBlockAvai);
	// console.log(setupCheckmate);
	
}




var checkmateFind = function() {
	var arr = secondLongNameArr; // Paste the name of the array here
	var priority = 'x';
	var sortedTemp = [];
	var checkmate;
	var block;

	for (var i = 0; i < arr.length; i++) {
			sortedTemp = arr[i].slice().sort(); // Make a copy of sorted child array
			// console.log(sortedTemp);
			for (var j = 0; j < sortedTemp.length; j++) {
				if ( (sortedTemp[j] === sortedTemp[j+1]) && sortedTemp[j] === priority  ) {
					checkmate = sortedTemp[0];
				}
				else if ( (sortedTemp[j] === sortedTemp[j+1]) && sortedTemp[j] !== priority  ) {
					block = sortedTemp[0];
				}
			}
	}
	if (checkmate) {
		return checkmate;
	}
	else if (!checkmate && block) {
		return block;
	}
	else {
		findSetupMove(arr);
	}
	
}
console.log(checkmateFind());



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