Click the green button to start and enter the correct answers below
Each digit and each letter appear only once. Digit and Letter are specific to their type, while Character refers to both. Adjacent INCLUDES diagonal. This can be solved without guessing. An even letter refers to a letter in an even position in the alphabet (B,D,F etc.). Same logic applies to prime and square letters. Feedback is greatly appreciated and walkthrough is now posted. Special thanks to VikZ for his guide on making logic puzzles.