Create a single HTML file that displays a live, auto-updating Bitcoin (BTC/USDT) price chart. Requirements: - **Single file**: All HTML, CSS, and JavaScript in one file (CDN links are fine) - **Data ...
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13 challenges
Understand code concepts, algorithms, and implementations.
Create an original, fun puzzle or game in a single HTML file using only HTML, CSS, and JavaScript. The core challenge is twofold: keep the code as short as possible while still making the game genuine...
Design a website UI mockup (HTML/CSS) for a luxury car dealership showroom. The site should feel like walking into a high-end showroom — prestigious, sleek, and immersive. **Requirements:** - **Hero ...
Write a Python script that continuously fetches the following prices every 60 seconds and stores them in a MySQL database: **Precious Metals:** Gold, Silver, Platinum, Palladium **Crypto:** Bitcoin, ...
The following Python async rate limiter uses a token bucket algorithm, but it has several subtle bugs that cause it to fail under concurrent usage. Tokens leak, requests occasionally bypass the rate l...
Design a detailed homepage layout mockup for a luxury jewelry website targeting a wealthy, discerning audience. The design should feel modern yet timeless, exuding elegance and exclusivity. **Require...
I need help getting an IRS refund that's been owed to me for over 6 years. Here's the situation: - I'm a non-US resident who sold a property in the US at a loss - The IRS withheld money under FIRPTA ...
Provide realistic predictions for how AI will shape everyday life and human interaction at four time horizons: 1 year, 3 years, 5 years, and 10 years from now. For each timeframe, address both positiv...
I want to build a Luffarschack (Gomoku/Five in a Row) game for my website using plain HTML, CSS, and JavaScript. I need: - A clickable game board grid - Two-player turn-based gameplay (alternating X a...
Explain a beginner-friendly method to solve a Rubik's cube from any scrambled state. I want to be able to memorize and use this method myself. Please include: - Step-by-step instructions for each stag...
I noticed my LED bulb appeared to pulsate with light radiating outward around it. This made me wonder about pulsation in light sources more broadly: 1. Why do LEDs and artificial lights flicker or pu...
I'd like to understand chess game endings from two perspectives: 1. **By rule/category**: How many distinct types of game endings exist in chess? (e.g., checkmate, stalemate, resignation, draw by agr...
I want to create a browser-based Othello (Reversi) game for two human players using plain HTML, CSS, and JavaScript (no frameworks). The game should include: - An 8x8 game board with the standard sta...