javascript - Loop through a game board represented by a matrix and analyze all possible 3 in a row winning positions -

i have 6 x 6 game board, represented following array:

gameboard= [         0 , 1, 2, 3, 4, 5,         6 , 7, 8, 9,10,11,         12,13,14,15,16,17,         18,19,20,21,22,23,         24,25,26,27,28,29,         30,31,32,33,34,35     ] 

i working on game of hybrid tic tac toe.

here first step (cpu's turn):

loop through each position of board

for(var i=0, len = gameboard.length; < len; i++){ } 

now, lets @ position 8.

my logic check surrounding positions (1,2,3,7,9,13,14,15) for:

• if there "x" (opponent), score = 0;
• if there blank space, sc0re = 1;
• if there "0", score = 2

at end, store inside array.

the position biggest score array, position cpu play.

finally, question: how code above logic inside loop?, keeping in mind there positions 0,1,2,4... aren't surrounded other positions can't use logic above everywhere.

here have tried , thinking of building on:

function scorecalc(pos){         console.log("score: "+pos);         var score = 0,             pocket;         pocket = jquery(document).find('[data-kcpos="'+pos+'"]');         if(jquery(pocket).hasclass("blank")){             score += 1;         } else if(jquery(pocket).text() == "x"){             score += 0;         } else if(jquery(pocket).text() == "0"){             score += 2;         }         console.log("score: "+score);         return score;     }   function minimax(){          var pos,             testmargin,             totest,             pocket,             score,             totestscore,             totalscore = new array();          for(var i=0, len = gameboard.length; < len; i++){             score = 0;             pos = gameboard[i];             // check if pocket empty             pocket = jquery(document).find('[data-kcpos="'+pos+'"]');             if(jquery(pocket).hasclass("blank")){                 // check see if have margin                 testmargin = jquery.inarray(pos, margins);                 if(testmargin != -1){ // if have margin                  } else {                     // test pocket above                     totest = pos - 6;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test pocket bellow                     totest = pos + 6;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test pocket left                     totest = pos - 1;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test pocket right                     totest = pos + 1;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test top left diagonal                     totest = pos - 7;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test bottom right diagonal                     totest = pos + 7;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test top right diagonal                     totest = pos - 5;                     totestscore = scorecalc(totest);                     score += totestscore;                      // test bottom left diagonal                     totest = pos + 5;                     totestscore = scorecalc(totest);                     score += totestscore;                 }                 totalscore.push({key: pos, val: score});             }         }         // sort array         totalscore.sort(function descending(a,b){              return b.val - a.val;         });          pocket = jquery(document).find('[data-kcpos="'+totalscore[0].key+'"]');         jquery(pocket).find(".ui-btn-text").text("0");         jquery(pocket).removeclass("blank");          return totalscore;     } 

using 2 dimensional array might make easier check surrounding areas. way you'll know position row , column, , can check [row-1, col-1], [row-1,col],[row-1, col+1] etc... make checking corner cases 0 or top row cases easier instead of knowing in 36 element array first 6 first row. players position x, y coordinate, board array gameboard[x][y].

the 2d array make checking edge cases easier, , might make game logic little easier understand. plus it'll give flexibility changing board size if desire.

good luck!