+ mkpos = lambda i: (px, i) if is_vertical else (i, py)
+
+ for i in range(5):
+ if (px, py) == mkpos(i):
+ continue
+ new_i = (i + change) % 5
+ if (px, py) == mkpos(new_i):
+ new_i = (new_i + change) % 5
+ shifted_locations[mkpos(new_i)] = self.board_locations[mkpos(i)]
+
+ print change, is_vertical, shifted_locations
+ self.board_locations.update(shifted_locations)
+
+ def shift_locations(self, direction):