Don't scroll down. Read just the setup. Did they identify the players correctly? Did they create a 3x3 matrix instead of a 2x2? Stop there. Try again.
Instructors use these specific problems for graded homework. Distributing or downloading unauthorized instructor solution manuals violates copyright law (Digital Millennium Copyright Act in the US) and most university honor codes. Students caught with these PDFs often face academic penalties, including automatic failure of the assignment or course.
Once you get an answer (e.g., "Player 1 chooses Up with 60% probability"), look at the solution to verify. If you are wrong, work backwards to find the error in your algebra or logic.
By: Academic Strategy Desk