Sum Stack: Number Sort Puzzle

Sort. Sum. Stack. Solve. Sum Stack is the addictive number-sorting puzzle that adds a twist to the sorting genre you already love. Instead of matching colors, you're matching numbers — and every container has a target sum you need to hit exactly. HOW TO PLAY Each stack holds a mix of numbered tiles. Your goal: move tiles between stacks until every container's numbers add up to its target sum, shown right on the label. Sounds simple — until you meet the one rule that changes everything. THE HANOI RULE You can never place a bigger number on top of a smaller one. Every move has to respect the order — just like the classic Tower of Hanoi puzzle. This single constraint turns "just sort the numbers" into a real brain-teaser: you'll need to think two, three, even five moves ahead before you commit. WHY YOU'LL GET HOOKED Easy to learn, genuinely hard to master — the first few levels take a…