Deadlock Empire

The Deadlock Empire is a programming game that teaches locking and concurrency. The skills you need are your intelligence, cunning, perseverance and the will to test yourself against the intricacies of multi-threaded programming in the divine language of C#. Each challenge below is a computer program of two or more threads. You take the role of the Scheduler - and a cunning one! Your objective is to exploit flaws in the programs to make them crash or otherwise malfunction.

For example, you might cause a deadlock to occur or you might schedule context switches in such a way that two threads enter the same critical section at the same time. Any action that disrupts the program this way counts as a victory for you.

You are the Scheduler - you only have one tool at your disposal: the ability to switch contexts at any time, as the total master of time and interruptions. Let's hope it is enough... it has to be, because the Parallel Wizard's armies are upon us and only you can lead the Sequentialist armies into victory!