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function Cross(value) {
  if (value == 0) document.pole0.src = x.src;
  if (value == 1) document.pole1.src = x.src;
  if (value == 2) document.pole2.src = x.src;
  if (value == 3) document.pole3.src = x.src;
  if (value == 4) document.pole4.src = x.src;
  if (value == 5) document.pole5.src = x.src;
  if (value == 6) document.pole6.src = x.src;
  if (value == 7) document.pole7.src = x.src;
  if (value == 8) document.pole8.src = x.src;
}

function Zero(value) {
  if (value == 0) document.pole0.src = o.src;
  if (value == 1) document.pole1.src = o.src;
  if (value == 2) document.pole2.src = o.src;
  if (value == 3) document.pole3.src = o.src;
  if (value == 4) document.pole4.src = o.src;
  if (value == 5) document.pole5.src = o.src;
  if (value == 6) document.pole6.src = o.src;
  if (value == 7) document.pole7.src = o.src;
  if (value == 8) document.pole8.src = o.src;
}

function CheckVictory() {
  if (cell[0] == cell[1] && cell[1] == cell[2] && cell[2] > 0) return true; 
  if (cell[3] == cell[4] && cell[4] == cell[5] && cell[5] > 0) return true;
  if (cell[6] == cell[7] && cell[7] == cell[8] && cell[8] > 0) return true;
  if (cell[6] == cell[3] && cell[3] == cell[0] && cell[0] > 0) return true;
  if (cell[7] == cell[4] && cell[4] == cell[1] && cell[1] > 0) return true;
  if (cell[8] == cell[5] && cell[5] == cell[2] && cell[2] > 0) return true;
  if (cell[6] == cell[4] && cell[4] == cell[2] && cell[2] > 0) return true;
  if (cell[0] == cell[4] && cell[4] == cell[8] && cell[8] > 0) return true;
}

function CompTurn() {
  for (i=0; i<9; i++) if (cell[i] == 0) PutHere = i;
  for (i=0; i<3; i++) {
  if (cell[0] == cell[1] && cell[2] == 0 && cell[0] == i) PutHere = 2;
  if (cell[0] == cell[2] && cell[1] == 0 && cell[0] == i) PutHere = 1;
  if (cell[1] == cell[2] && cell[0] == 0 && cell[2] == i) PutHere = 0;
  if (cell[3] == cell[4] && cell[5] == 0 && cell[3] == i) PutHere = 5;
  if (cell[3] == cell[5] && cell[4] == 0 && cell[3] == i) PutHere = 4;
  if (cell[4] == cell[5] && cell[3] == 0 && cell[5] == i) PutHere = 3;
  if (cell[6] == cell[7] && cell[8] == 0 && cell[6] == i) PutHere = 8;
  if (cell[6] == cell[8] && cell[7] == 0 && cell[6] == i) PutHere = 7;
  if (cell[7] == cell[8] && cell[6] == 0 && cell[8] == i) PutHere = 6;

  if (cell[6] == cell[3] && cell[0] == 0 && cell[6] == i) PutHere = 0;
  if (cell[6] == cell[0] && cell[3] == 0 && cell[6] == i) PutHere = 3;
  if (cell[3] == cell[0] && cell[6] == 0 && cell[3] == i) PutHere = 6;
  if (cell[7] == cell[4] && cell[1] == 0 && cell[7] == i) PutHere = 1;
  if (cell[7] == cell[1] && cell[4] == 0 && cell[7] == i) PutHere = 4;
  if (cell[4] == cell[1] && cell[7] == 0 && cell[4] == i) PutHere = 7;
  if (cell[8] == cell[5] && cell[2] == 0 && cell[8] == i) PutHere = 2;
  if (cell[8] == cell[2] && cell[5] == 0 && cell[8] == i) PutHere = 5;
  if (cell[5] == cell[2] && cell[8] == 0 && cell[5] == i) PutHere = 8;

  if (cell[6] == cell[4] && cell[2] == 0 && cell[6] == i) PutHere = 2;
  if (cell[6] == cell[2] && cell[4] == 0 && cell[6] == i) PutHere = 4;
  if (cell[4] == cell[2] && cell[6] == 0 && cell[4] == i) PutHere = 6;
  if (cell[0] == cell[4] && cell[8] == 0 && cell[0] == i) PutHere = 8;
  if (cell[0] == cell[8] && cell[4] == 0 && cell[0] == i) PutHere = 4;
  if (cell[4] == cell[8] && cell[0] == 0 && cell[4] == i) PutHere = 0;
  }
  Zero(PutHere);
  cell[PutHere] = 2;
  if (CheckVictory() == true) {
    alert("Выиграл JavaScript =).");
    GameOver();
  }
}

function GameOver() {
  for (i=0; i<9; i++) cell[i] = 0;
  document.pole0.src = e.src;
  document.pole1.src = e.src;
  document.pole2.src = e.src;
  document.pole3.src = e.src;
  document.pole4.src = e.src;
  document.pole5.src = e.src;
  document.pole6.src = e.src;
  document.pole7.src = e.src;
  document.pole8.src = e.src;
}