
Bulls and Cows — Number Guessing Game
Guess the secret four-digit number in this classic logic puzzle game.
@Olys1703 · X
🚀 Just released a new version of Bulls and Cows! The game now supports Dark Mode 🌙
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Guess the secret four-digit number in this classic logic puzzle game.
@Olys1703 · X
🚀 Just released a new version of Bulls and Cows! The game now supports Dark Mode 🌙

Create and take multiple-choice quizzes with timers, instant scoring, and answer breakdowns.
@Omodaro_M · X
Check out what I just built with Lovable!

Real-time multiplayer quiz game with AI host, 30+ game modes, and exam prep packs.
@deebee230730 · X

A daily puzzle game where you spot AI-generated errors to sharpen critical thinking.
u/CogniKing · Reddit
Play Parry — a 2-minute daily puzzle about catching AI's mistakes: spot the planted flaw, catch the answer that's lying to you I have been recently fascinated with puzzles as a way to help improve my BS-radar when using AI. I designed Parry to help with this - One puzzle a day - find the one flaw hidden in a confident paragraph, pick which of two AI answers actually helps you (one is subtly useless), call a claim true/false. Free, no account, nothing you input leaves your devi

Solve daily AI-written mystery puzzles and guess the culprit.
selljamhere · HN
Whodunit? Solve a daily AI-written Mystery

Analyze chess games with natural language explanations using an open-source browser tool with no login required.
u/ICARUS_2X · Reddit
Spent 7 months building a FOSS platform for natural-language chess analytics (No LLM) Hey guys, I've released CHONSE2, an open-source game review platform that offers unlimited analysis and move explanations without using hallucination-prone LLMs, running entirely in your browser. chonse2.com But Lichess is free, so why use this? Some have asked. It expands on Lichess's feature set a few different ways: Full analysis (accuracy/elo estimations/eval graphs, etc) requir

Interactive lessons in math, programming, data analysis, AI, and science.
@BruceWayne95290 · X
just leaving a comment cause its 1am and im vibe coding, will come back tomorrow (on an alt account for open claw fyi) I've worked with the following brands: vytadose, bajabeachco, jaje health, eric javits, 4knines, welleco, coatdefence

Learn to code and build projects through interactive games and challenges designed for the LLM era
@RahimNathwani · X
Not a direct answer but the guys at Exercism (non-profit that publishes really good and free programming language self-study courses) recently launched a separate site to teach junior programmers both vibe coding and software engineering fundamentals.

Refine ideas through logical reasoning and publish them to a community of verified knowledge.
samcymbaluk · HN
Axiom toolkit – Make your ideas precise enough to be proven wrong

Photograph math equations and word problems to receive instant solutions with step-by-step explanations.
@7spiritz · X
Check out what I just built with Lovable!

Compete against Claude AI in timed coding challenges judged on speed, correctness, and code quality.
u/Easy-Visit-3934 · Reddit
I built a coding platform where you can compete with Claude on various coding problems, it evaluates based on speed, correctness and code quality Link: https://www.duelai.dev/ Feel free to give it a try and let me know what you think! submitted by /u/Easy-Visit-3934 to r/SideProject [link] [comments]

Solve 1000 verified DSA problems with multi-language solutions organized by topic and difficulty.
@Hshu_15 · X
Built something I’ve been working on 🚀 a free platform with 1000 DSA problems, organized by topic & difficulty. Built with ChatGPT + Antigravity and deployed on Vercel. 🌐 ⚡ #DSA #Coding