Complete puzzles 1-5 in one session without failing or restarting.
Complete puzzles 6-10 in one session without failing or restarting.
Complete puzzles 11-15 in one session without failing or restarting.
Complete puzzles 16-20 in one session without failing or restarting.
Complete puzzles 21-25 in one session without failing or restarting.
Complete puzzles 26-30 in one session without failing or restarting.
Complete puzzles 31-35 in one session without failing or restarting.
Complete puzzles 36-40 in one session without failing or restarting.
Complete puzzles 41-45 in one session without failing or restarting.
Complete puzzles 46-50 in one session without failing or restarting.