Alexander Gren

Solo founder of Soduel and brain health promotor

Stockholm, SEJoined November 2026

At work, we all bought the same puzzle magazine and started the same Sudoku at the same time. The first one done won! 🏆 It was so much fun that I wanted to share it with the world, so I built Soduel: a free Sudoku game where you race other people on the same puzzle.