A class of games and activities of skill and logic, particularly puzzles based on reason and logic are described. Disclosed are a method and a system for comparing solutions to the puzzles based on the paths to solution and for completion of the activities based on the order of carrying out the steps of the activity. A number of applications of the method are disclosed for development of further puzzles and activities from the initial puzzle or activity, as well as for other enriching experiences and expressions, particularly the method of providing a priori or real time hints to a participant to solve the puzzle or advance in the activity. Also disclosed is a particular, novel method for participation by remote audience in logic and skill based activities such as creating or improving known logic puzzles and wagering.