diff --git a/2022/09/input b/2022/09/input
new file mode 100644
index 0000000..376a293
--- /dev/null
+++ b/2022/09/input
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+R 8
+D 12
+U 11
+D 14
+U 16
+L 5
+R 8
+D 2
+L 10
+D 14
+R 16
+D 13
+U 14
+L 6
+R 11
+D 4
+R 15
+D 2
+R 3
+L 2
+U 8
+L 4
+D 5
+U 3
+L 11
+U 7
+R 14
+U 4
+L 5
+D 10
+U 16
+L 1
+U 5
+R 11
+D 16
+U 5
+D 11
+R 5
+D 9
+R 3
+U 13
+D 6
+L 10
+D 2
+U 4
+D 7
+U 1
+R 10
+D 6
+U 12
+L 2
+D 8
+U 5
+L 5
+U 7
+L 3
+U 16
+D 12
+L 12
+R 16
+L 5
+R 17
+L 7
+U 17
+D 15
+R 14
+L 7
+U 16
+R 7
+D 7
+R 14
+D 6
+L 7
+U 6
+R 5
+D 14
+L 8
+R 3
+L 1
+U 12
+L 8
+D 11
+R 3
+D 11
+L 16
+R 4
+U 2
+R 17
+U 10
+R 3
+U 13
+R 6
+D 16
+U 15
+R 3
+U 7
+D 6
+U 2
+L 12
+D 11
+L 6
+D 9
+R 7
+U 10
+R 14
+D 10
+R 10
+D 17
+R 9
+L 11
+R 7
+D 14
+L 10
+U 17
+R 5
+D 12
+U 11
+D 11
+R 7
+D 12
+U 10
+D 10
+U 8
+D 11
+R 8
+U 9
+L 17
+D 15
+R 2
+D 14
+L 10
+U 2
+L 9
+R 15
+L 8
+D 9
+L 7
+R 10
+D 6
+L 15
+U 1
+L 11
+R 14
+L 7
+R 17
+U 17
+L 8
+U 16
+D 4
+R 9
+L 13
+R 5
+L 1
+D 14
+U 7
+L 8
+R 10
+U 10
+D 16
+U 6
+R 13
+D 12
+U 10
+L 3
+U 2
+R 7
+D 12
+R 16
+D 1
+L 14
+R 9
+D 18
+R 1
+L 17
+R 9
+U 16
+L 5
+U 12
+R 7
+D 6
+L 17
+U 3
+R 5
+U 13
+D 9
+U 12
+L 13
+D 5
+R 1
+U 7
+L 4
+R 13
+D 1
+L 15
+U 11
+L 5
+D 2
+R 12
+D 12
+U 5
+L 1
+R 5
+U 3
+R 5
+L 9
+R 15
+U 3
+D 18
+L 10
+R 2
+D 7
+R 13
+L 8
+R 5
+L 2
+R 15
+D 12
+L 14
+U 15
+L 8
+U 13
+R 13
+L 15
+R 16
+D 10
+L 15
+U 1
+R 1
+D 3
+U 17
+D 2
+L 5
+R 17
+U 6
+R 10
+L 3
+D 11
+R 13
+D 5
+U 3
+D 9
+U 10
+R 12
+D 10
+R 15
+U 11
+L 6
+R 3
+U 4
+D 7
+R 12
+L 5
+R 7
+D 17
+L 14
+U 9
+D 7
+U 2
+R 1
+D 13
+R 3
+D 12
+L 3
+U 17
+D 1
+U 6
+L 8
+U 17
+D 1
+R 6
+L 8
+R 8
+U 5
+L 12
+D 8
+R 5
+L 11
+U 17
+L 3
+U 11
+L 1
+R 15
+D 15
+L 10
+D 10
+L 19
+R 11
+L 4
+D 11
+L 13
+U 4
+D 6
+L 3
+U 11
+R 3
+L 9
+D 4
+U 10
+L 14
+D 10
+R 11
+L 1
+R 1
+D 8
+R 19
+D 6
+L 16
+D 1
+U 13
+R 19
+U 19
+D 3
+R 8
+D 16
+R 2
+D 2
+L 19
+D 7
+R 2
+U 4
+L 5
+R 2
+U 9
+L 5
+D 13
+L 5
+R 14
+L 13
+D 5
+U 10
+R 12
+L 11
+D 18
+U 7
+L 12
+R 11
+D 16
+U 15
+L 12
+R 12
+D 1
+R 2
+D 6
+L 15
+D 8
+R 19
+U 9
+R 12
+L 10
+R 3
+D 19
+R 15
+U 12
+R 6
+L 3
+D 17
+R 2
+U 11
+D 12
+L 15
+D 16
+R 18
+D 16
+U 12
+R 16
+U 17
+R 15
+L 10
+R 4
+D 12
+L 5
+R 11
+L 1
+U 11
+R 3
+D 5
diff --git a/2022/09/part1 b/2022/09/part1
new file mode 100755
index 0000000..aff9073
--- /dev/null
+++ b/2022/09/part1
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+import math
+
+MOVES = {
+  'U': ( 0, -1),
+  'D': ( 0, +1),
+  'L': (-1,  0),
+  'R': (+1,  0),
+}
+
+TAIL_POSITIONS = set([])
+HEAD = (0, 0)
+TAIL = (0, 0)
+
+def point_add(a, b):
+    return tuple(map(lambda i, j: i + j, a, b))
+
+def move(delta):
+    global TAIL_POSITIONS, HEAD, TAIL
+
+    last_head = HEAD
+    HEAD = point_add(HEAD, delta)
+
+    if ed := math.dist(HEAD, TAIL) < 2.0:
+        _ # do nothing
+    elif ed == 2.0:
+        TAIL = point_add(TAIL, delta)
+    else:
+        TAIL = last_head
+
+    TAIL_POSITIONS.add(TAIL)
+
+with open('input') as f:
+    for line in f:
+        direction, count = line.rstrip().split(" ")
+        for _ in range(int(count)):
+            move(MOVES[direction])
+
+print(len(TAIL_POSITIONS))
diff --git a/2022/09/part2 b/2022/09/part2
new file mode 100755
index 0000000..a634866
--- /dev/null
+++ b/2022/09/part2
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+import math
+
+MOVES = {
+  'U': ( 0, -1),
+  'D': ( 0, +1),
+  'L': (-1,  0),
+  'R': (+1,  0),
+}
+
+TAIL_POSITIONS = set([])
+HEAD = (0, 0)
+TAILS = [(0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0)]
+
+def point_add(a, b):
+    return tuple(map(lambda i, j: i + j, a, b))
+
+def move(delta):
+    global TAIL_POSITIONS, HEAD, TAIL
+
+    HEAD = point_add(HEAD, delta)
+
+    leader = HEAD
+    for idx, tail in enumerate(TAILS):
+        ed = math.dist(leader, tail);
+        if ed < 2.0:
+            _ # do nothing
+        elif ed == 2.0: # follow the leader: linear
+            x, y = 0,0
+            if leader[0] < tail[0]:
+                x = -1
+            elif leader[0] > tail[0]:
+                x = 1
+            if leader[1] < tail[1]:
+                y = -1
+            elif leader[1] > tail[1]:
+                y = 1
+            TAILS[idx] = point_add(tail, (x,y))
+        else: # follow the leader: diagonal
+            x, y = 1, 1
+            if leader[0] < tail[0]:
+                x = -1
+            if leader[1] < tail[1]:
+                y = -1
+            TAILS[idx] = point_add(tail, (x,y))
+
+        leader = TAILS[idx]
+
+    TAIL_POSITIONS.add(TAILS[-1])
+
+
+
+with open('input') as f:
+    for line in f:
+        direction, count = line.rstrip().split(" ")
+        for _ in range(int(count)):
+            move(MOVES[direction])
+
+print(len(TAIL_POSITIONS))
diff --git a/README.md b/README.md
index 8d0df54..bc7085c 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ a programming language I'm interested in learning more about.
 2018, 2019, and 2020 were in their own separate repositories, but have been
 `git subtree`'d into this one - no point creating a new repository every year.
 
-* [2022](https://code.ur.gs/lupine/advent-of-code/src/branch/main/2022) 🌟 `16` - Python
+* [2022](https://code.ur.gs/lupine/advent-of-code/src/branch/main/2022) 🌟 `18` - Python
 * [2021](https://code.ur.gs/lupine/advent-of-code/src/branch/main/2021) 🌟 ` 5` - Python
 * [2020](https://code.ur.gs/lupine/advent-of-code/src/branch/main/2020) 🌟 `20` - Javascript
 * [2019](https://code.ur.gs/lupine/advent-of-code/src/branch/main/2019) 🌟 `22` - Zig
@@ -18,6 +18,6 @@ a programming language I'm interested in learning more about.
 * 2016 🌟 `16` - LISP?
 * 2015 🌟 ` 9` - Ruby?
 
-Total: 🌟 `94`
+Total: 🌟 `96`
 
 Maybe I'll backfill some of the old years one day.