Question 1

Build Wordle

Accepted Answer

**Target Audience:** Frontend developers preparing for a machine coding round. You know React components and useState; the game rules and the scoring algorithm are explained from zero. **Difficulty:** Medium > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. The Verified section is real output from booting the solution on React 19.3.1 in StrictMode and

Question 2

Build Tic-Tac-Toe

Accepted Answer

**Target Audience:** Frontend candidates preparing for a machine coding round. Assumes basic HTML, CSS and JavaScript and a first look at React components; no game-programming background needed. **Difficulty:** Medium > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. All code excerpts are copied from the runnable solution on this page, and the Verified section quot

Question 3

Build Connect Four

Accepted Answer

**Target Audience:** Frontend candidates preparing for a machine coding round. Comfortable with React components, props and useState; no game-programming background needed. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. Excerpts come from the runnable solution on this page, and the Verified section quotes what it printed on Reac

Question 4

Build Whack-a-Mole

Accepted Answer

**Target Audience:** Frontend candidates preparing for a machine coding round. Comfortable with React state and effects; game loops, timers and testable randomness are explained from zero. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. Excerpts come from the runnable solution, and the Verified section quotes a deterministic test run (seeded

Question 5

Build a Memory (flip-card) Game

Accepted Answer

**Target Audience:** Frontend developers preparing for a machine coding round. You know a little React (components, `useState`); nothing about games is assumed. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. The Verified section is real output from booting the solution on React 19.3.1 in StrictMode and clicking through it with a script. ##

Question 6

Build Minesweeper

Accepted Answer

**Target Audience:** Frontend developers preparing for a machine coding round. You know React components and useState; the game and the flood-fill algorithm are explained from zero. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. The Verified section is real output from booting the solution on React 19.3.1 in StrictMode and click

Question 7

Build the Snake Game

Accepted Answer

**Target Audience:** Frontend developers preparing for a machine coding round. You know React components and useState; game loops are explained from zero. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. The Verified section is real output from booting the solution on React 19.3.1 in StrictMode and driving it with key presses and

Question 8

Build Tic-Tac-Toe II (N x N board, M in a row)

Accepted Answer

**Target Audience:** Candidates who can already build the basic 3 x 3 game and want the harder follow-up an interviewer asks next. Comfortable with React state and props; no algorithms background assumed. **Difficulty:** Hard > **How to read this doc:** Every idea is explained in plain language first, then tagged with 📌 Interview term: so you also learn the words an interviewer listens for. This doc assumes the basics from [Build Tic-Tac-Toe](/interview-question/build-tic-tac-toe)

FRONTEND MACHINE CODINGDECODED.

Medium