Multithreaded Sudoku validator

Assignment for the Operating Systems I course at the UFSC Computer Science program

Developed by @gjcarpe, @luizgcd and @telmotrooper

Please note that:

• We didn't get full marks for this;
• It seems not to work for all use cases;
• We allow for any number of threads to be created, but if you create more than 27 the cost of creating threads actually makes the program take longer to finish.