java multithreading and concurrency

Objectives: Let there be Miners and Wizards. The goal of the miners is to explore all the tunnels in their cave system. The cave system has many rooms, each with its puzzle to solve. The miners can solve the puzzles and with the solutions, the wizards can break the magic barriers protecting the cave and gain access to the adjacent rooms. The Wizards are not always available, as sometimes they sleep. When a wizard is awake, he takes puzzle solutions from the miners, and does wizardly things to unlock the paths to all adjacent rooms. If the puzzles are solved incorrectly, when the wizard tries to unlock the paths, a great explosion kills everyone, ends the program, and the student is given 0 points. The solution should be implemented in Java using threads. You are only responsible for implementing the miners and the communication channel between them and the wizards.