BigQuery automates data prep, analysis, and predictions with built-in AI assistance.
Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
Try Free
$300 Free Credits to Build on Google Cloud
New to Google Cloud? Get $300 in credits to explore Compute Engine, BigQuery, Cloud Run, Gemini Enterprise Agent Platform, and more.
Start your next project with $300 in free Google Cloud credit. Spin up VMs, run containers, query petabytes in BigQuery, or build agents with Gemini Enterprise Agent Platform. Once your credits are used, keep building with 20+ always-free tier products including Compute Engine, Cloud Storage, GKE, and Cloud Run functions. No commitment required—just sign up and start building.
C source for a fast backtracking Sudoku solver. Console interface, non-graphic, accepts files with multiple games. Can solve 10,000 Sudokus in under a minute. New version is 5% faster! :)
Solve 9x9 Sudoku Puzzles Using A Command Line Utility
This tool written in C uses the Backtracking algorithm to solve Sudoku puzzles.
The idea was born by participating a coding challenge of a German internet forum.
https://www.coding-board.de/threads/coding-herbst-die-coding-board-de-coding-challenge.39297/
So it's rather made for fun. However, this code won in terms of speed.
Unfortunately, the initiator of the contest has passed away in the meantime.
JSudoku is a Java version of the game Sudoku. A backtracking algorithm cares for random puzzles and based on the Sudoku-Puzzle JavaScript. Optionally, JSudoku generates X-Sudoku puzzles.