Here is a list of Edmund's Brainteasers:
Brainteaser 1 Brainteaser 1 Solution.
Brainteaser 2 Brainteaser 2 Solution.
Brainteaser 3 Brainteaser 3 Solution.
Brainteaser 4 Brainteaser 4 Solution.
Brainteaser 5 Brainteaser 5 Solution.
Brainteaser 6 Brainteaser 6 Solution.
Brainteaser 7 Brainteaser 7 Solution.
Brainteaser 8 Brainteaser 8 Solution.
Brainteaser 9 Brainteaser 9 Solution.
Brainteaser 10 Brainteaser 10 Solution.
Brainteaser 11 Brainteaser 11 Solution.
Brainteaser 12 Brainteaser 12 Solution.
Brainteaser 13 Brainteaser 13 Solution.
Brainteaser 14 Brainteaser 14 Solution.
Brainteaser 15 Brainteaser 15 Solution.
Brainteaser 16 Brainteaser 16 Solution.
Brainteaser 17 Brainteaser 17 Solution.
Brainteaser 18 Brainteaser 18 Solution.
Brainteaser 19 Brainteaser 19 Solution.
Brainteaser 20 Brainteaser 20 Solution.
Brainteaser 21 Brainteaser 21 Solution.
Brainteaser 22 Brainteaser 22 Solution.
Brainteaser 23 Brainteaser 23 Solution.