Offers puzzles in PDF and mySQL formats for solving offline or building into custom applications. Also offers online puzzles with three difficulty levels and customizable look-and-feel. [Dutch/English]
JavaScript-based solver which attempts to complete grids by logic. Includes step-by-step description as well as suggesting a single move. Offers challenge to find new logical methods for "unsolvable" puzzles.
Shareware puzzle solver. Generate and solve puzzles, print out the grid for solving by hand, tips and tutorials with online discussion forums. [Windows XP/2000/Me/98]
Open source application which describes the logic used to solve a grid, rather than using a simple brute force solution. Includes source code and samples. [Windows 95/98/NT/2000/XP, Linux]
