Sudoku Mania: Combinational Sudokus

I hired a developer to create a sudoku generator for me. It generates 4x4, 6x6 and 9x9 with the difficulties easy, medium, hard, very hard. This is from a 6x6 very hard

Sudoku 6x6 - Easy

6x6 Sudoku Puzzles Printable - Sheet 3

6x6 Sudoku Puzzles Printable - Sheet 1

6x6 Diagonal Sudoku Puzzles (MSSeries #115, #116)

Tips and Tricks to solve a 6x6 Sudoku Puzzle step by step

Jigsaw Sudoku instructions and free Jigsaw Sudoku puzzles to play online

Mini Sudoku 6X6 - Medio - Volume 45 - 276 Puzzle 9781512107692

Sudoku for Beginners: 4x4, 6x6 and 9x9 Sudoku Puzzles: Easy Sudoku Book for Beginners with Solution

A 6x6 Sudoku that fits in between a 4x4 and 9x9 : r/3Blue1Brown