The object is to fill in the rows and columns with digits 1 to 9 (no duplicates) so that their sum matches the clues. Puzzles have only one solution, and can be solved without resorting to trial and error. Simple to understand, challenging to solve!

Features
-No ads - ever!
-Synchronize your progress across multiple devices
-Use your tablet at home; continue on your phone at lunch
-True tablet support - landscape or portrait
-Three levels 6x6, 8x8, 10x10
-150 puzzles to start
-Thousands to download for free!
• Statistics

Game Play
-Enlarge sums on small screens
-Pencil marks
-Undo/Redo
-Copy/Paste/Clear
-Pause/play
-Reset puzzle

Assistance
-Highlight duplicates and incorrect sums
-Timer and move counter
-Highlight rows/column with unique solutions
-View possible combinations
-Reveal solution
-Help and strategy examples

Puzzles are from the collection at http://krazydad.com Copyright 2015—2016 and used with permission.

Permissions
Modify/Read SD Card: Writing error log.
Network Access: Download new puzzles.
Create/Find Accounts: Synchronization with Google Drive.
Sync Settings: Synchronization with Google Drive.

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Download APK (9 MB)