diff --git a/2022/16/part1.js b/2022/16/part1.js
new file mode 100644
index 0000000..9809253
--- /dev/null
+++ b/2022/16/part1.js
@@ -0,0 +1,66 @@
+import * as R from "remeda";
+import u from "updeep";
+
+import { readFile } from "../05/part1.js";
+
+const parseLine = (line) => {
+    const {groups} = line.match( /Valve (?<valve>..).*flow rate=(?<flow>\d+).*valves? (?<exits>.*)/ );
+    return [ groups.valve, {
+        exits: groups.exits.split(',').map( x => x.trim() ),
+        flow: groups.flow
+    } ]
+}
+const readInput = (...args) =>
+  R.pipe(
+    readFile(...args),
+    (lines) => lines.split("\n"),
+    R.compact, // remove last line
+    R.map(parseLine),
+    Object.fromEntries,
+  );
+
+export const puzzleInput = readInput(import.meta.url, "input");
+export const sample = readInput(import.meta.url, "sample");
+
+function bestMoveFor(tunnels,minutesLeft,opened,location='AA',totalSteam=0,activeSteam=0) {
+    console.log(minutesLeft, totalSteam);
+
+    if(minutesLeft<=0) return totalSteam;
+
+    totalSteam += activeSteam;
+
+    const possibilities = [];
+
+    if(!opened.includes(location)) {
+        possibilities.push(
+            bestMoveFor(
+                tunnels,
+                minutesLeft-1,
+                [...opened, location],
+                location,
+                totalSteam,
+                activeSteam + tunnels[location].flow
+            )
+        )
+    }
+
+    for( const exit of tunnels[location].exits ) {
+        possibilities.push(
+            bestMoveFor(
+                tunnels,
+                minutesLeft-1,
+                opened,
+                exit,
+                totalSteam,
+                activeSteam,
+            )
+        )
+    }
+
+    return Math.max( ...possibilities );
+}
+
+
+export default (tunnels) => {
+    return bestMoveFor(tunnels,30,[]);
+};
diff --git a/2022/16/part2.js b/2022/16/part2.js
new file mode 100644
index 0000000..10fc179
--- /dev/null
+++ b/2022/16/part2.js
@@ -0,0 +1,4 @@
+import * as R from "remeda";
+
+
+export default () => {};
diff --git a/2022/16/sample b/2022/16/sample
new file mode 100644
index 0000000..9f30acc
--- /dev/null
+++ b/2022/16/sample
@@ -0,0 +1,10 @@
+Valve AA has flow rate=0; tunnels lead to valves DD, II, BB
+Valve BB has flow rate=13; tunnels lead to valves CC, AA
+Valve CC has flow rate=2; tunnels lead to valves DD, BB
+Valve DD has flow rate=20; tunnels lead to valves CC, AA, EE
+Valve EE has flow rate=3; tunnels lead to valves FF, DD
+Valve FF has flow rate=0; tunnels lead to valves EE, GG
+Valve GG has flow rate=0; tunnels lead to valves FF, HH
+Valve HH has flow rate=22; tunnel leads to valve GG
+Valve II has flow rate=0; tunnels lead to valves AA, JJ
+Valve JJ has flow rate=21; tunnel leads to valve II
diff --git a/2022/16/test.js b/2022/16/test.js
new file mode 100644
index 0000000..8521f1c
--- /dev/null
+++ b/2022/16/test.js
@@ -0,0 +1,29 @@
+import { test, expect, describe } from "vitest";
+
+import { expectSolution } from "../01/main.js";
+import part1, { sample, puzzleInput } from "./part1.js";
+import part2 from "./part2.js";
+
+describe("part 1", () => {
+    test( "input", ()=> {
+        expect(sample).toMatchObject({AA: {
+            exists: [
+                'DD', 'II', 'BB',
+            ],
+                flow: 0,
+        }})
+        
+    } )
+  test.only("sample", () => {
+    expectSolution(part1(sample)).toEqual(1651);
+  });
+  test.todo("solution", () => {
+    expectSolution(part1(puzzleInput)).toEqual("TODO");
+  });
+});
+
+describe("part 2", () => {
+  test.todo("solution", () => {
+    expectSolution(part2(puzzleInput)).toEqual("TODO");
+  });
+});