Best Expert Level

This Omnibus volume collects a curated selection of the best New York Times crosswords, offering a taste of the iconic puzzles that have challenged solvers for decades. The puzzles are known for their...

This Udemy course, taught by Jonas Schmedtmann, aims to take students from zero JavaScript knowledge to an expert level. It covers a vast range of topics, including core JavaScript, DOM manipulation,...

Designed for experienced Sudoku solvers, 'Extreme Sudoku' presents a collection of particularly challenging puzzles. These puzzles require advanced techniques and a high level of logical deduction. Th...

The Particle Physics Podcast is geared towards a slightly more advanced audience but still accessible for beginners with a strong interest in fundamental physics. It features interviews with leading r...

Sudoku Samurai presents a unique twist on the classic puzzle, featuring multiple Sudoku grids on each page. This significantly increases the complexity and challenge. Designed for experienced Sudoku s...

This book is aimed at experienced Sudoku solvers seeking a significant challenge. The puzzles are exceptionally difficult, requiring mastery of advanced techniques and a high level of logical deductio...