diff --git a/package.json b/package.json
index ba8abc6..def0901 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,9 @@
     "build+start": "npm run build && npm run start",
     "build:watch": "tsc -w -p tsconfig.json",
     "test:watch": "node --import tsx --test --watch **/**/*.spec.ts",
-    "test": "node --import tsx --test **/**/*.spec.ts"
+    "test:watch:only": "node --import tsx --test --test-only --watch **/**/*.spec.ts",
+    "test": "node --import tsx --test **/**/*.spec.ts",
+    "test:only": "node --import tsx --test --test-only **/**/*.spec.ts"
   },
   "author": "",
   "license": "ISC",
diff --git a/src/2d-array/2d-array.spec.ts b/src/2d-array/2d-array.spec.ts
index 801728f..586a845 100644
--- a/src/2d-array/2d-array.spec.ts
+++ b/src/2d-array/2d-array.spec.ts
@@ -2,7 +2,7 @@ import {describe, it, skip} from 'node:test';
 import * as assert from "node:assert";
 import {findHighestHourglassSum} from "./2d-array";
 import {Matrix} from "./matrix";
-describe("2D Array",  () => {
+describe("2D Array", () => {
    describe("findHighestHourglassSum", () => {
       it("should return 0 if the matrix is empty", () => {
          assert.equal(findHighestHourglassSum(new Matrix([])), 0);
diff --git a/src/ctci-ransom-note/ctci-ransom-note.spec.ts b/src/ctci-ransom-note/ctci-ransom-note.spec.ts
new file mode 100644
index 0000000..3ff30a0
--- /dev/null
+++ b/src/ctci-ransom-note/ctci-ransom-note.spec.ts
@@ -0,0 +1,36 @@
+import {describe, it} from "node:test";
+import assert = require("node:assert");
+import {checkMagazine} from "./ctci-ransom-note";
+
+describe("Ctci Ransom Note", () => {
+    describe("checkMagazine",  () => {
+        it("if note is empty should return Yes", () => {
+            assert.deepStrictEqual(checkMagazine(["bla", "ble", "bli"], []), "Yes");
+        })
+
+        it("if magazine is empty and note have words should return No",  () => {
+            assert.deepStrictEqual(checkMagazine([], ["bla", "ble", "bli"]), "No");
+        })
+
+        it("Yes case", () => {
+            assert.deepStrictEqual(checkMagazine(["give", "me", "one", "grand" ,"today" ,"night"], ["give", "one", "grand", "today"]), "Yes");
+        })
+
+        it("No case due case-sensitive in magazines", () => {
+            assert.deepStrictEqual(checkMagazine(["give", "me", "one", "Grand" ,"today" ,"night"], ["give", "one", "grand", "today"]), "No");
+        })
+
+        it("No case due case-sensitive in note", () => {
+            assert.deepStrictEqual(checkMagazine(["give", "me", "one", "grand" ,"today" ,"night"], ["give", "one", "Grand", "today"]), "No");
+        })
+
+        it("No case for lack of duplicated words", () => {
+            assert.deepStrictEqual(checkMagazine(["two", "times", "three", "is" ,"not" ,"four"], ["two", "times", "two", "is", "four"]), "No");
+        })
+
+        it("No case",  () => {
+            assert.deepStrictEqual(checkMagazine(["ive", "got", "a", "lovely" ,"bunch" ,"of", "coconuts"], ["ive", "got", "some", "coconuts"]), "No");
+        })
+
+    });
+})
\ No newline at end of file
diff --git a/src/ctci-ransom-note/ctci-ransom-note.ts b/src/ctci-ransom-note/ctci-ransom-note.ts
new file mode 100644
index 0000000..88f9610
--- /dev/null
+++ b/src/ctci-ransom-note/ctci-ransom-note.ts
@@ -0,0 +1,21 @@
+export function checkMagazine(magazine: Array<string>, note: Array<string>): 'Yes' | 'No' {
+
+    if(magazine.length === 0 && note.length > 0) {
+        return 'No'
+    }
+
+    if(note.length === 0) {
+        return 'Yes'
+    }
+
+    for(const n of note) {
+        const index = magazine.indexOf(n);
+        if(index > -1) {
+            magazine.splice(index, 1)
+        } else {
+            return 'No'
+        }
+    }
+
+    return 'Yes'
+}
\ No newline at end of file
diff --git a/src/new-year-chaos/new-year-chaos.ts b/src/new-year-chaos/new-year-chaos.ts
new file mode 100644
index 0000000..e69de29