Domino Puzzles. No Daily Limit.
Place all 28 dominoes on a 6×6 board. Every colored region has a mathematical rule. Every tile must satisfy it — or the puzzle isn't solved.
NO DOWNLOAD · NO REGISTRATION · RUNS IN BROWSER
Math-Constrained Placement
Every region carries a rule — sum, product, equal, or prime. You can't just fill space; you have to fill it correctly.
No Daily Limit
Unlike NYT's one-puzzle-a-day format, Pips generates new puzzles on demand. Play one or twenty — there's no queue.
Works on Any Screen
Drag-and-drop on desktop, tap-and-place on mobile. No install, no account — open and play immediately.
- 300+ hand-validated puzzles across Easy, Medium, and Hard — plus unlimited algorithm-generated boards.
- Built-in timer to benchmark your improvement over time.
- Share your result after each solve — challenge friends on the same board.
- 8 visual themes including dark mode, auto-synced with your system preference.
- Progress saved locally. No account or download required.
Pips takes the classic double-six domino set — 28 tiles, 0 through 6 — and gives them a new job. Instead of matching ends like traditional dominoes, you're filling a 6×6 grid where each colored region has a strict mathematical rule. A region labeled = 8 means the dots inside must sum to exactly 8. A region marked P means every dot value must be prime. You can't satisfy one region and break another.
The tension comes from the tile set itself: you only have one of each domino. Once you place the 3|5, it's gone. That scarcity is what makes the puzzle hard — it's not just constraint satisfaction, it's constraint satisfaction with limited resources.
The NYT introduced Pips in 2024 — one puzzle per day, same format. This site offers the same format with unlimited puzzles and expanded constraint types. Same game, no daily limit.
Puzzle fans who've outgrown Sudoku
Sudoku has one input type. Pips adds a second layer: the physical shape of a domino. Tile placement affects multiple regions simultaneously — pencil-marking won't save you.
NYT Pips players wanting more
The NYT version resets every 24 hours. Here, new puzzles are available whenever you want — same format, no daily limit, with extra constraint types.
People who want clear right/wrong
No ambiguity. Either all regions are satisfied, or the puzzle isn't solved. Feedback is immediate.
Casual players on a short break
An Easy puzzle takes most people under 5 minutes. No account, no tutorial, no loading screen. Open and play.
Basic constraints, wider regions. Good for learning placement mechanics and reading conditions.
More complex regions, tighter constraints, and new rule types like Even, Odd, and Prime.
Dense boards, Product and No-6 constraints. Requires planning several moves ahead.
To change difficulty: open Settings (⚙️ top-right) → select level → start a new game.
Open Settings — top-right
Select difficulty and save
Start New Game
Fill the entire 6×6 board using all 28 domino tiles. Every colored region has a mathematical rule — you only win when all rules are satisfied simultaneously.
Understand the tile bank
You start with all 28 tiles from a double-six set: every combination from 0|0 to 6|6, each exactly once. They're displayed below the board. You have to use all of them — no tiles are spare.
Read the region conditions
Each colored region shows a label in its corner defining what the dots inside must satisfy:
A domino covers two cells — often straddling two regions. Each half satisfies its own region's rule independently.
Place tiles
Desktop: drag from bank onto board. Mobile: tap to select, tap again to rotate 90°, then tap an empty cell to place. Click/tap a placed tile to remove it — returns to bank.
Think in sequences, not individual tiles
Using the 3|5 in one region means it's unavailable everywhere else. Start by identifying the most constrained regions — a "Prime" region limits you to values 2, 3, 5 only. Work out which tiles fit before placing anything.
When you're stuck
Look for regions where only one or two tiles could satisfy the condition. That forced placement often unlocks adjacent regions. If everything's open, try corners and edges first — fewer neighboring constraints.
Full walkthrough of an Easy-level puzzle — tile selection, rotation, live constraint reading.
Pips isn't solvable by brute force — the board is too large and tile interactions too dense for random placement to work.
A "Prime" region can only contain dots 2, 3, or 5. A small region with a high sum target narrows tile options fast. Lock these down before touching open regions.
The 6|6 tile contributes 12 dots. If a region needs a sum of 11 or higher, those tiles are already scarce. Know where the big tiles go early — don't spend them casually.
A 2|5 placed horizontally puts different dot values in different regions than vertical placement. Region boundaries are fixed — the same tile can satisfy or violate a rule depending on rotation.
Corner and edge cells have fewer neighboring region options. They're often forced placements — resolving them first tends to unlock the interior in chains.
If no tile can be placed without violating a constraint, you've made an earlier mistake. Backtrack to the last placement you were certain about.
Is this the same as the NYT Pips puzzle?
Same format. The NYT version publishes one puzzle per day. This site generates unlimited puzzles and includes additional constraint types (Prime, Product, Even/Odd, No 6s) not currently in the NYT version.
How do I rotate a tile on mobile?
Tap once to select. Tap again to rotate 90°. Then tap an empty cell to place. Don't press and hold — just tap.
What happens when a domino straddles two regions?
Each half is evaluated by the region it lands in. Left half in a "Sum = 5" region, right half in "Even" — each side satisfies its own rule independently. This is the core tension of the game.
Does it save my progress?
Progress is saved in your browser's local storage. Close the tab mid-puzzle and return — the board state is restored. No account needed.
Are the puzzles solvable without guessing?
Yes — every curated puzzle has a unique solution derivable through logic alone. Algorithm-generated puzzles are also validated for uniqueness before being served.
8 Visual Themes Added
The default "Classic" look now has seven alternatives. Themes affect tile colors, board backgrounds, and region highlighting — not just the page chrome.
- Classic — original styling
- Dark Mode — full dark palette
- Ocean Breeze — blue/teal regions
- Forest Green — muted greens
- Sunset Glow — warm orange/purple
- Neon Lights — high-contrast vivid
- Pastel Dream — soft, desaturated
Auto Dark Mode
The game now reads your device's system color-scheme preference on load. If your OS is in dark mode, the game opens in Dark Mode automatically. Override manually via the theme switcher.
Theme Switcher UI
Replaced the dropdown with a row of circular color swatches. Single click, immediate preview — no reload required.
5 New Constraint Types
Extended the original constraint set. These appear in Medium and Hard puzzles:
Bug Fix: "New Game" Button
Fixed a bug where clicking "New Game" after completing a puzzle occasionally loaded a board with the previous puzzle's region layout but new tile assignments — producing unsolvable states. The board now fully resets before generating a new puzzle.
Core gameplay: 6×6 board, full double-six tile set, five constraint types (Sum, Equal, Not Equal, Less Than, Greater Than), three difficulty levels, built-in timer, result sharing, and mobile touch support.