Puzzle Categories:
Chess Clock, Love Psyche, and Earth Calendars

Learn how to use Discrete Mathematics to express strategies in chess through propositional logic.
Find the missing chess moves or create propositions.
Gain a new hobby with cross-proposition puzzles.
Solve Knights & Knaves puzzles and reveal all possibilities.
Theorize about provided literatures, and check the validity of arguments by building truth trees.
Find the coordinates of locations using permutations and combinations.
Enjoy a handy gift of a timezone reference grid for the countries in last puzzle series upon your completion.

Demonstrations are provided for all challenges.