How to Play Queens Game
A complete guide to understanding the rules and mastering the Queens logic puzzle. Whether you're a total beginner or looking to improve your speed, this guide covers everything you need.
The Rules
Queens is a logic puzzle played on a square grid. The grid is divided into colored regions, and your goal is to place queens following these rules:
- One queen per row — Every row contains exactly one queen.
- One queen per column — Every column contains exactly one queen.
- One queen per color region — Each colored region contains exactly one queen.
- No touching — Queens cannot be adjacent to each other, including diagonally.
That's it. Four simple rules, and every puzzle has exactly one solution that can be reached through pure logic. No guessing required.
Step-by-Step Solving Guide
Look at the colored regions
Every Queens puzzle starts with a square grid divided into colored regions. The number of colors equals the grid size (e.g., an 8x8 grid has 8 colors). Each region is a group of connected cells sharing the same color.
Place one queen per row
Every row must have exactly one queen. You cannot leave a row empty, and you cannot place two queens in the same row.
Place one queen per column
Just like rows, every column must contain exactly one queen. Cross-reference row and column constraints to narrow down where queens can go.
Place one queen per color region
Each colored region gets exactly one queen. This is the unique constraint that makes Queens different from the classic N-Queens chess problem.
No queens can touch (even diagonally)
After placing a queen, every cell directly adjacent to it — including diagonals — is eliminated. This means each queen has an 'exclusion zone' of up to 8 surrounding cells.
Use elimination to solve
Mark cells that cannot contain a queen (because of row, column, region, or adjacency constraints). When only one cell remains valid in a row, column, or region, that's where the queen goes.
Solving Strategies
1. Start with Small Regions
The most reliable way to begin any Queens puzzle is to find the smallest regions. A region with only one cell is a guaranteed queen placement. A region with two cells gives you just two options to consider. Start with these constrained regions and let the eliminations cascade outward.
2. Elimination by Adjacency
Every time you place a queen, mark all adjacent cells (including diagonals) as unavailable. This is the “exclusion zone” — no other queen can go there. After placing a queen, check if any row, column, or region now has only one remaining valid cell. If so, that's your next queen.
3. Row-Column Confinement
If all the cells of a particular region fall within a single row, the queen for that region must be in that row. This means no other region can place its queen in the same row. The same logic applies to columns. This technique is especially powerful in larger grids.
4. Region Intersection
When two constraints intersect — for example, a region and a row both restrict queens to the same set of cells — you can make strong deductions. If region A's queen must be in row 3, and you know row 3 already has only two possible columns, you've narrowed region A to just two cells.
5. Process of Elimination
If a particular cell is the only valid option for any one of the three constraints (its row, its column, or its region), a queen must go there. Systematically check each row, column, and region to see if any has been reduced to a single candidate.
Ready to practice these techniques? Explore our detailed strategy guides with visual examples, or jump into a daily puzzle to test your skills.
Frequently Asked Questions
Can queens touch each other?
No. Queens cannot be adjacent to any other queen, including diagonally. If you place a queen at position (3,4), no other queen can be at (2,3), (2,4), (2,5), (3,3), (3,5), (4,3), (4,4), or (4,5).
Is there always exactly one solution?
Yes. Every properly designed Queens puzzle has exactly one valid solution. You never need to guess — every placement can be deduced logically from the constraints.
What's the best strategy for beginners?
Start with the smallest regions. A region with only one or two cells severely limits where its queen can go. Place those queens first, then use elimination to cascade into the rest of the puzzle.
How is this related to the N-Queens problem?
The classic N-Queens problem asks you to place N queens on an NxN chessboard so no two share a row, column, or diagonal. The Queens game adds colored regions (one queen per region) and relaxes the diagonal rule to only adjacent diagonals, making it more accessible.
What grid size should I start with?
If you're new to Queens, start with 5x5 or 6x6 grids. They have simpler configurations and can be solved quickly. Once you're comfortable, move up to 7x7 and 8x8 for the full experience.