diff --git a/day10/input b/day10/input
new file mode 100644
index 0000000..6260eb7
--- /dev/null
+++ b/day10/input
@@ -0,0 +1,138 @@
+addx 1
+addx 5
+noop
+addx -1
+noop
+addx 3
+addx 29
+addx -1
+addx -21
+addx 5
+noop
+addx -20
+addx 21
+addx 2
+addx 8
+addx -1
+noop
+noop
+noop
+noop
+addx 6
+addx -1
+addx -37
+addx 40
+addx -10
+addx -25
+addx 5
+addx 2
+addx 5
+noop
+noop
+noop
+addx 21
+addx -20
+addx 2
+noop
+addx 3
+addx 2
+addx -5
+addx 12
+addx 3
+noop
+addx 2
+addx 3
+addx -2
+addx -37
+addx 1
+addx 5
+addx 3
+addx -2
+addx 2
+addx 29
+addx -22
+addx 13
+noop
+addx -8
+addx -6
+addx 7
+addx 2
+noop
+addx 7
+addx -2
+addx 5
+addx 2
+addx -26
+addx -11
+noop
+noop
+addx 6
+addx 1
+addx 1
+noop
+addx 4
+addx 5
+noop
+noop
+addx -2
+addx 3
+noop
+addx 2
+addx 5
+addx 2
+addx -22
+addx 27
+addx -1
+addx 1
+addx 5
+addx 2
+noop
+addx -39
+addx 22
+noop
+addx -15
+addx 3
+addx -2
+addx 2
+addx -2
+addx 9
+addx 3
+noop
+addx 2
+addx 3
+addx -2
+addx 2
+noop
+noop
+noop
+addx 5
+addx -17
+addx 24
+addx -7
+addx 8
+addx -36
+addx 2
+addx 3
+addx 33
+addx -32
+addx 4
+addx 1
+noop
+addx 5
+noop
+noop
+addx 20
+addx -15
+addx 4
+noop
+addx 1
+noop
+addx 4
+addx 6
+addx -30
+addx 30
+noop
+noop
+noop
+noop
+noop
diff --git a/day10/sample b/day10/sample
new file mode 100644
index 0000000..37ee8ee
--- /dev/null
+++ b/day10/sample
@@ -0,0 +1,146 @@
+addx 15
+addx -11
+addx 6
+addx -3
+addx 5
+addx -1
+addx -8
+addx 13
+addx 4
+noop
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx -35
+addx 1
+addx 24
+addx -19
+addx 1
+addx 16
+addx -11
+noop
+noop
+addx 21
+addx -15
+noop
+noop
+addx -3
+addx 9
+addx 1
+addx -3
+addx 8
+addx 1
+addx 5
+noop
+noop
+noop
+noop
+noop
+addx -36
+noop
+addx 1
+addx 7
+noop
+noop
+noop
+addx 2
+addx 6
+noop
+noop
+noop
+noop
+noop
+addx 1
+noop
+noop
+addx 7
+addx 1
+noop
+addx -13
+addx 13
+addx 7
+noop
+addx 1
+addx -33
+noop
+noop
+noop
+addx 2
+noop
+noop
+noop
+addx 8
+noop
+addx -1
+addx 2
+addx 1
+noop
+addx 17
+addx -9
+addx 1
+addx 1
+addx -3
+addx 11
+noop
+noop
+addx 1
+noop
+addx 1
+noop
+noop
+addx -13
+addx -19
+addx 1
+addx 3
+addx 26
+addx -30
+addx 12
+addx -1
+addx 3
+addx 1
+noop
+noop
+noop
+addx -9
+addx 18
+addx 1
+addx 2
+noop
+noop
+addx 9
+noop
+noop
+noop
+addx -1
+addx 2
+addx -37
+addx 1
+addx 3
+noop
+addx 15
+addx -21
+addx 22
+addx -6
+addx 1
+noop
+addx 2
+addx 1
+noop
+addx -10
+noop
+noop
+addx 20
+addx 1
+addx 2
+addx 2
+addx -6
+addx -11
+noop
+noop
+noop
diff --git a/day10/sol.py b/day10/sol.py
new file mode 100644
index 0000000..21636a8
--- /dev/null
+++ b/day10/sol.py
@@ -0,0 +1,35 @@
+
+cycle = 0
+X = 1
+T = 0
+def step():
+    global T
+    global cycle
+    cycle += 1
+    if cycle in (20, 60, 100, 140, 180, 220):
+        ss = cycle * X
+        T += ss
+
+    px = (cycle-1) % 40
+    if abs(X - px) <= 1:
+        # sprite is visible
+        img.append('#')
+    else:
+        img.append(' ')
+
+
+img = []
+
+for line in open("input"):
+    ins = line.strip()
+    if ins == "noop":
+        step()
+    else:
+        step()
+        step()
+        X += int(line.split()[1])
+
+print (T)
+
+for i in range(0, len(img), 40):
+    print(''.join(img[i:i+40]))