System 1. e4 c5 2. Kf3 d6 3. d4 cd 4. K:d4 Kf6 5. Kc3 a6 was introduced to chess at the very beginning of the sixties during the crisis of the Scheveningen Defenses and the Dragon Variant. So the Paulsen System was revived, and the wait-and-see move 5 ... a6 appeared. Having delayed the development of the kingside by one move, Black is ready at any moment to move on to the studied patterns, while maintaining a certain independence in the choice of plans. In the present work, an attempt is made to systematize the very diverse and extensive information accumulated in chess publications over those years. The author used materials published in print no later than March 1, 1969.
