u/avneramram

Rangsk has posted a solve of "Rain", one of our Palindrome puzzles - a medium board with fourteen palindrome lines running through it.

▶ https://youtu.be/wpHa1E-3MEU

Fourteen lines sounds decorative until you remember that cells equidistant from a line's centre hold the same digit, so each one quietly copies information across the grid.

The link to play it yourself is in the video description, so you can watch the solve or jump straight into the puzzle.

Full disclosure: Rangsk records these in partnership with us.

Rangsk has posted a solve of "Orbits", one of our Thermo puzzles - a medium board with twelve thermometers running through it.

▶ https://youtu.be/BQQNZ-_8Z9M

The link to play it yourself is in the video description, so you can watch the solve or jump straight into the puzzle.

Full disclosure: Rangsk records these in partnership with us.

Welcome to this week's Time Expressions challenge. Five variant sudokus, one for each way we talk about time, with the expression built into the shape of the grid.

Choose your level

• Easy - Killing Time · Renban + German Whispers: https://link.sudoku.logic-wiz.com/iaXm
• Medium - Time Flies · Thermo + Renban + Even/Odd: https://link.sudoku.logic-wiz.com/pQJ2
• Hard - Time Waits For No One · Diagonal + Killer + Thermo + Renban + German Whispers: https://link.sudoku.logic-wiz.com/hl0s
• Expert - Race Against Time · Zipper Lines + Between Lines + Index Lookup: https://link.sudoku.logic-wiz.com/rUFJ
• Master - Around the Clock · Axia + Renban + Even/Odd: https://link.sudoku.logic-wiz.com/1wLs

On desktop these open straight in your browser, nothing to install. On a phone they open in the Logic Wiz app.

One thing sudoku teaches you: you can beat the puzzle, but you can never beat the clock. Take your time anyway. Happy solving!

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Don't have the app yet?

• 📲 iOS: https://apps.apple.com/app/logic-wiz-sudoku/id1530683853
• 📱 Android: https://play.google.com/store/apps/details?id=com.uvmlab.usudoku
• 🌐 Browser: https://sudoku.logic-wiz.com

Help shape the future of Logic Wiz!
Vote for the next Sudoku variant we should add:

🔺 Vertex
🔹 Nabner Lines
🇳🇱 Dutch Flatmates
🟢 Chinese Whispers

Vote in our poll on Reddit, or send us a support email from the app and mention your favorite variant.

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🔺 Vertex (V-Sum)

Vertex uses a V-shaped marker connecting three cells. The middle cell (vertex) depends on the two end cells. These markers are scattered across the grid.

Rule:

The center cell (vertex) must equal either:

• The sum of the two end digits, or
• The difference between the two end digits

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🔹 Nabner Lines

Digits on a Nabner Line:

• Cannot repeat
• Cannot contain consecutive digits

✅ Allowed:

• 1, 3, 5, 7, 9
• 2, 4, 6, 8
• 1, 4, 7, 9

❌ Not allowed:

• 3 and 4 (consecutive)
• 6 and 7 (consecutive)
• 5 and 5 (repeat)

Long Nabner Lines are especially powerful: a 5-cell Nabner Line must contain exactly: 1, 3, 5, 7, 9

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🇳🇱 Dutch Flatmates

A simple rule with surprising depth!

Rule:

Every 5 in the grid must have:

• A 1 directly above it, or
• A 9 directly below it,
• or both.

Interesting deductions:

• A 5 in the top row must have a 9 below it.
• A 5 in the bottom row must have a 1 above it.

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🟢 Chinese Whispers

A powerful line constraint inspired by German Whispers.

Rule:

Neighboring pairs of digits on the line differ by at most 2.

• If allowed by the puzzle rules, adjacent digits on the line may be identical.

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⭐ Which variant should we add next?

Cast your vote and help decide the future of Logic Wiz!

Hey everyone!

We're excited to announce that our full lineup of handcrafted puzzle apps is live and free to play on your desktop or laptop, right in your browser - no downloads, no installs, and (for now) completely ad-free. Just click and start solving!

🎮 Play Now

• Sudoku & Variants by Logic Wiz - classic Sudoku plus a growing library of creative variants
• Classic Sudoku by Logic Wiz - the timeless original, clean and distraction-free
• Killer Sudoku by Logic Wiz - cage sums meet Sudoku logic for an extra layer of challenge
• Jigsaw Sudoku by Logic Wiz - irregular regions & variants replace the standard grid for a fresh twist
• Suguru & Variants by Logic Wiz - non-square regions, no repeats, pure logic fun

✨ Why you'll love it

• 🌐 100% browser-based - play on desktop or laptop, no app store needed.
• 🚫 No ads (seriously, enjoy the peace and quiet)
• 🧠 Great difficulty range, from Beginner to master
• ⚡ Fast, clean, and built for puzzle lovers by puzzle lovers
• 💡 Smart Hints, helping with the next logical move
• ⚒️ Handcrafted puzzles

We'd genuinely love your feedback - this is just the beginning, and your input will help shape what we build next.

Logic Wiz Team

Logic Wiz Web Site

This week, it’s all about sharp eyes and clever thinking. In addition to solving the puzzles, can you solve our matchstick brainteasers by moving only a few matches?
Puzzles, match questions & answers are in the adventures section in the app.

Choose Your Level:

• Easy: ▶https://link.sudoku.logic-wiz.com/AYIx
• Medium: ▶https://link.sudoku.logic-wiz.com/JhhQ
• Hard: ▶https://link.sudoku.logic-wiz.com/6t6o
• Expert: ▶https://link.sudoku.logic-wiz.com/D479
• Master: ▶https://link.sudoku.logic-wiz.com/m3lS

The links above open these challenges directly in the free Logic Wiz app!

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Don't have the app yet? Join the colony:

• 📲 iOS: https://apps.apple.com/app/logic-wiz-sudoku/id1530683853
• 📲 Android: https://play.google.com/store/apps/details?id=com.uvmlab.usudoku

Discover in-depth guides for our unique Sudoku variants and unlock advanced strategies:

https://www.logic-wiz.com

This week, we’re turning our puzzles into a full orchestra! 🎼
From the elegant curves of a 🎸 guitar to the thunder of 🥁 drums and the smooth sound of a 🎺 Trumpet… each puzzle in this challenge is inspired by the rhythm, harmony, and personality of musical instruments. Can you keep the rhythm and solve them all without missing a beat? 🎹🔥

Choose Your Level:

• Easy(Piano): ▶https://link.sudoku.logic-wiz.com/To5S
• Medium(Xylophone): ▶https://link.sudoku.logic-wiz.com/9CzY
• Hard(Guitar): ▶https://link.sudoku.logic-wiz.com/95KP
• Expert(Drum): ▶https://link.sudoku.logic-wiz.com/34RF
• Master(Trumpet): ▶https://link.sudoku.logic-wiz.com/QVcj

The links above open these challenges directly in the free Logic Wiz app!

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Don't have the app yet? Join the colony:

• 📲 iOS: https://apps.apple.com/app/logic-wiz-sudoku/id1530683853
• 📲 Android: https://play.google.com/store/apps/details?id=com.uvmlab.usudoku

Game: Sudoku & Variants by Logic Win Google Play: https://play.google.com/store/apps/details?id=com.uvmlab.usudoku

What if a single idea could change the world?

Today(May 1st), we celebrate Global Love Day - a reminder that love is more than a feeling… it’s a choice, a connection, a universal language that transcends borders, cultures, and even logic itself. This week’s challenge is inspired by that powerful force. Each puzzle is crafted to reflect harmony, connection, and the beauty of patterns coming together as one.

• 🌍 Embrace the challenge.
• 💡 Trust the logic.
• ❤️ Spread the love.

Choose Your Level:

• Easy: ▶https://link.sudoku.logic-wiz.com/Sic3
• Medium: ▶https://link.sudoku.logic-wiz.com/Jl2u
• Hard: ▶https://link.sudoku.logic-wiz.com/vL1y
• Expert: ▶https://link.sudoku.logic-wiz.com/jZG5
• Master: ▶https://link.sudoku.logic-wiz.com/0Yhr

The links above open these challenges directly in the free Logic Wiz app!

April 25 marks International Astronomy Day. Space has always been one of our absolute favorite topics to explore. There is something profoundly logical-and yet completely mind-bending—about the laws that govern the stars. This week's challenges will take you on a journey through the celestial sphere. The sky is not the limit - it’s just the beginning. ✨

Choose Your Level:

• Easy: ▶https://link.sudoku.logic-wiz.com/7KTd
• Medium: ▶https://link.sudoku.logic-wiz.com/WbHR
• Hard: ▶https://link.sudoku.logic-wiz.com/D4KG
• Expert: ▶https://link.sudoku.logic-wiz.com/MZxF
• Master: ▶https://link.sudoku.logic-wiz.com/lZeC The links above open these challenges directly in the free Logic Wiz app!

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Don't have the app yet? Join the colony:

• 📲 iOS: https://apps.apple.com/app/logic-wiz-sudoku/id1530683853
• 📲 Android: https://play.google.com/store/apps/details?id=com.uvmlab.usudoku