You Failed Your Math Test, Comrade Einstein: Adventures and Misadventures of Young Mathematicians or Test Your Skills in Almost Recreational Mathematics

Interesting and tough problems from Moscow State University, Moscow Institute for Physics and Technology, and Moscow Institute for Engineering and Physics. Includes articles on the history of using tougher questions to refuse admission of Jewish students - a form of state-sanctioned discrimination, before the era of perestroika. There is also material covering the alleged KGB assassination of Bella Abramovna - a dedicated math teacher who organized an informal underground university for educating Jewish math students in the Soviet Union. A fascinating read.