The Battle of Prokhorovka - one of the main, turning points not only of the Battle of Kursk, but of the entire Great Patriotic War - has been surrounded by myths and legends for decades. To this day it is called “the greatest tank battle of World War II,” and many are still confident that it ended in our victory. Having compared documents from Soviet and German military archives, analyzing the course of hostilities by day and hour, L.H. Lopukhovsky irrefutably proves that the counterattack on July 12, 1943 near Prokhorovka ended in a major failure for our army, which complicated the further actions of the troops of the Voronezh Front. The book reveals the reasons for the large losses of the Red Army, which significantly exceed official data. However, all these sacrifices were not in vain. Having exhausted and bled the enemy, our troops launched a decisive counter-offensive, seized the strategic initiative and finally turned the tide of the Great Patriotic War.