[In Addendum: CSPs] 🧠💡 Constraint Satisfaction Problems (CSPs) are at the heart of some of the smartest problem-solving techniques out there. They involve variables, domains, and constraints—rules that limit which values can go where—with the goal of assigning values that satisfy all the constraints ✅. Instead of guessing, CSP solvers use logic to eliminate impossible options 🧐. From Sudoku puzzles 📝 to scheduling 📅, route planning 🗺️, and AI decision-making 🤖, CSPs are everywhere, helpin