zzllrr mather(an offline tool for Math learning, education and research)小乐数学，离线可用的数学学习（自学或教学）、研究辅助工具。计划覆盖数学全部学科的解题、作图、演示、探索工具箱。目前是演示Demo版（抛转引玉），但已经支持数学公式编辑显示，部分作图功能，部分学科，如线性代数、离散数学的部分解题功能。最终目标是推动专业数学家、编程专家、教育工作者、科普工作者共同打造出更加专业级的Mather数学工具

A solver for Sudoku puzzles written in Python.

Webapp for Puzzle Lovers to try out new puzzles. At present it has 140+ users and 800+ submissions. Here one can solve, share and practice the puzzles, compete with others and conquer the leaderboard.

Adventure 2D game, address book and console utility(ls)