Link to project: https://allidoiscode1234.github.io/sudoku-auto-solver/
Tech used: HTML, CSS, JavaScript
Using a 3D array to create the shapes and a 2D array for the board, handling collisions, rotating and even keeping score!
Take a look at these couple examples that I have in my own portfolio:
Portfolio: https://github.com/AlliDoisCode1234/JosiahJames.io
Sudoku Solver: https://github.com/AlliDoisCode1234/sudoku-auto-solver