RULE 01
One queen per color
Place exactly one queen in every color region — no more, no less.
Crown every color region, outwit the grid, and climb the global leaderboard. Fresh logic puzzles to sharpen your brain — how fast can you solve today's board?
See it in action
Place queens, earn points, and watch the boards grow level after level.
How it works
Every board is a colorful grid split into distinct color regions. Three rules, one solution.
RULE 01
Place exactly one queen in every color region — no more, no less.
RULE 02
Only one queen may sit in any given row, and only one in any column.
RULE 03
No two queens may be neighbors — not horizontally, vertically, or diagonally.
PURE LOGIC
Every board is uniquely solvable by deduction alone. Boards grow from 5×5 to 12×12 as you improve.
Try it now
Tap a square to place or remove a queen. Get a feel for it right here — no download needed.
Place one queen in each color — one per row and column, none touching.
Hint: a cell with a single color region must hold a queen — and nothing can touch it.
More than a puzzle
Compete on weekly and all-time rankings. Faster, cleaner solves score more — watch your rank rise in real time.
Track win streaks, first-try rate, best times, queens placed and more. Your personal record of every board you've cracked.
Chain clean wins for streak bonuses and milestone rewards. Every solved board moves you up the board.
Log in for daily coins and a free hint. Spend coins on hints when a board gets tough.
Unlock and equip cosmetic crowns — from Classic and Frost to Gold — and make the board your own.
A clean, colorful design that's easy on the eyes, in 38 languages, that plays beautifully offline.
Take a look
Why you'll love it
No luck — every board has exactly one solution you can reason out.
Learn the rules in seconds; stay for boards that scale to 12×12 and beyond.
Clean, colorful, satisfying — a calm challenge that still makes you think.
A hand-crafted teaching arc plus endless generated puzzles after.
Questions
Queens Puzzle: Crown Logic is a free logic puzzle for iPhone. You place queens on a colorful grid so that every color region, every row, and every column has exactly one queen — and no two queens ever touch, not even diagonally.
Use pure deduction. Each color region needs exactly one queen, only one queen may sit in any row or column, and queens cannot be adjacent (including diagonally). Start from forced single-cell regions, rule out their neighbors, and the rest follows — every board has one unique solution.
Yes. Queens Puzzle is free to download and play. There are optional in-app purchases — coin packs and an ad-free upgrade — but every puzzle is fully playable for free.
Yes. You can play anywhere without a connection. Your progress, scores, and leaderboard rank sync automatically the next time you're online.
It blends them. Like Star Battle it uses color regions, and like the classic N-Queens problem you place non-attacking queens. Combined with the no-touch rule and exactly one queen per region, each board resolves to a single logical solution — no guessing required.
Boards start at 5×5 and grow as your skill improves — 6×6, 8×8, 10×10, 12×12 and beyond — so the challenge always scales with you.
Queens Puzzle runs on iPhone with iOS 15.0 or later.
Download Queens Puzzle, solve today's board, and see how high you can climb.
Download on theApp Store