Tournoi du forum 2011

Description of the tournament: 

The objective is to solve 6 Sudoku grids as quickly as possible. The tournament is designed as a relay, so you need to solve the Sudoku grids in the following order: 

1. consecutive sudoku 

2. Chaos Sudoku ( = irregular sudoku = jigsaw sudoku) 

3. sudoku X ( = sudoku diagonal) 

4. arrow sudoku 

5. killer sudoku 

6. toroidal sudoku