diff --git a/day23.py b/day23.py
index 96a6218..716ba72 100644
--- a/day23.py
+++ b/day23.py
@@ -6,18 +6,17 @@ TEST_SOLUTION_PART2 = 149245887792
 
 
 class Cup:
-    def __init__(self, label, left=None, right=None):
+    def __init__(self, label, right=None):
         self.label = label
-        self.left = left
         self.right = right
 
 
-def buildDoubleLinkedListDict(cup_list):
+def buildLinkedListDict(cup_list):
     cups = {}
     left_cup = None
     first_cup = None
     for cup in cup_list:
-        thisCup = Cup(cup, left_cup, None)
+        thisCup = Cup(cup, None)
         if first_cup is None:
             first_cup = thisCup
         else:
@@ -25,7 +24,6 @@ def buildDoubleLinkedListDict(cup_list):
         left_cup = thisCup
         cups[cup] = thisCup
 
-    first_cup.left = thisCup
     thisCup.right = first_cup
 
     return cups, first_cup
@@ -35,25 +33,21 @@ def play(cups, current_cup, max_label):
     first_pickup = current_cup.right
     first_after_pickup = current_cup.right.right.right.right
     current_cup.right = first_after_pickup
-    first_after_pickup.left = current_cup
 
     destination_label = current_cup.label - 1 if current_cup.label > 1 else max_label
     while destination_label in [first_pickup.label, first_pickup.right.label, first_pickup.right.right.label]:
         destination_label = destination_label - 1 if destination_label > 1 else max_label
 
     desination_cup = cups[destination_label]
-    desination_right = desination_cup.right
+    first_pickup.right.right.right = desination_cup.right
     desination_cup.right = first_pickup
-    first_pickup.left = desination_cup
-    desination_right.left = first_pickup.right.right
-    first_pickup.right.right.right = desination_right
 
     return cups, current_cup.right
 
 
 def part1(test_mode=False):
     my_input = aoclib.getInputAs2DArray(day=DAY, return_type=int, test=test_mode)
-    cups, current_cup = buildDoubleLinkedListDict(my_input[0])
+    cups, current_cup = buildLinkedListDict(my_input[0])
 
     for _ in range(100):
         cups, current_cup = play(cups, current_cup, 9)
@@ -69,9 +63,9 @@ def part1(test_mode=False):
 
 def part2(test_mode=False):
     my_input = aoclib.getInputAs2DArray(day=DAY, return_type=int, test=test_mode)
-    cups, current_cup = buildDoubleLinkedListDict(my_input[0] + list(range(max(my_input[0]) + 1, 1000001)))
+    cups, current_cup = buildLinkedListDict(my_input[0] + list(range(max(my_input[0]) + 1, 1_000_001)))
 
-    for _ in range(10000000):
-        cups, current_cup = play(cups, current_cup, 1000000)
+    for _ in range(10_000_000):
+        cups, current_cup = play(cups, current_cup, 1_000_000)
 
     return cups[1].right.label * cups[1].right.right.label