diff --git a/2018/day11.py b/2018/day11.py
new file mode 100644
index 0000000..b1fdb66
--- /dev/null
+++ b/2018/day11.py
@@ -0,0 +1,38 @@
+import numpy as np
+input = 4455
+fuel_cells = np.zeros((300,300), dtype=np.int64)
+
+for y in range(300):
+  fuel_cells[:,y] = y+1
+for x in range(300):
+  fuel_cells[x,:] *= x+11
+fuel_cells += input
+for x in range(300):
+  fuel_cells[x,:] *= x+11
+fuel_cells //= 100
+fuel_cells %= 10
+fuel_cells -= 5
+
+max_power = 0
+max_idx = (0,0)
+for x in range(298):
+  for y in range(298):
+    val = fuel_cells[x:x+3, y:y+3].sum()
+    if val > max_power:
+      max_power = val
+      max_idx = (x+1,y+1)
+
+print(max_idx)  # Part 1
+
+
+max_power = 0
+max_idx = (0,0,0)
+for x in range(298):
+  for y in range(298):
+    for s in range(3, 301-max(x,y)):
+      val = fuel_cells[x:x+s, y:y+s].sum()
+      if  val > max_power:
+        max_power = val
+        max_idx = (x+1,y+1,s)
+
+print(max_idx)  # Part 2