def get_chess(self):
self.idx += 1
x, y = self.idx / self.m, self.idx % self.m
move(self.location(x, y))
dType.SetEndEffectorSuctionCup(api, True, True, isQueued=1)
def down_chess(self, x, y):
move(self.location(x, y))
dType.SetEndEffectorSuctionCup(api, True, False, isQueued=1)