Skip to content
José da Cruz

Enterprise Architect, and Life Thinker

José da Cruz

Enterprise Architect, and Life Thinker

Category: puzzles and challenges

puzzles and challenges

Puzzles You Should Know – Ep.3 – Two Coins Puzzle (And 6 Real-Life/Software Examples)

josedacruz, May 21, 2025May 21, 2025

Ever flipped two heads in a row and wondered what that really means? 🪙 In this video, we dive into the classic Two Coins Puzzle to reveal the logic behind Bayes’ Theorem — one of the most powerful tools for updating beliefs based on evidence. Whether you’re debugging software, reading…

Continue Reading
puzzles and challenges

Interview questions & puzzles: Ep2 – The Two Egg Problem, A Strategy Puzzle for Engineers, Testers, and Architects

josedacruz, May 14, 2025May 14, 2025

Welcome to a deep dive into one of the most fascinating logic puzzles in engineering and algorithm design: The Two Egg Problem. This isn’t just a puzzle — it’s a masterclass in decision-making under constraints, testing strategy, and optimization thinking. Whether you’re prepping for tech interviews or building resilient systems,…

Continue Reading
puzzles and challenges

The Two Doors Puzzle: A Lesson in Asking the Right Questions

josedacruz, May 1, 2025May 1, 2025

What Is the Two Doors Puzzle? Imagine this: you’re standing in front of two doors. One of them leads to freedom. The other—death. There are also two guards: You can ask only one question to one of the guards to figure out which door leads to freedom. So, what do…

Continue Reading
  • architecture (154)
  • artificial-intelligence (6)
  • books (2)
  • courses (4)
  • decision-frameworks (4)
  • finances (1)
  • java (8)
  • life-improvement (20)
  • metrics (3)
  • observability (2)
  • puzzles and challenges (3)
  • reviews (1)
  • security (8)
  • spring-boot (36)
  • Systems Thinking (3)
  • GitHub Weekly: MCP Tools Trending Right Now (September 28 – October 4, 2026)
  • The Bulkhead Pattern: Why One Slow Dependency Shouldn’t Sink the Whole Ship
  • Essential Reading: A Philosophy of Software Design — Fighting Complexity One Module at a Time
  • GitHub Weekly: Top 10 Trending Repos (September 21 – September 27, 2026)
  • The Volunteer Tax: Why Raising Your Hand in a Meeting Makes You the Permanent Owner
©2026 José da Cruz | WordPress Theme by SuperbThemes