Secrets of Opening Surprises brings you a wide variety of unusual opening ideas. They may seem outrageous at first sight, but have proven to be perfectly playable. An SOS deviates very early from the regular lines in a mainstream opening, usually even before move six. That is why it is so easy to actually bring the variation on the board. With an SOS you will baffle your opponent, gain crucial time and stand a good chance to get an advantage without having studied large quantities of stuffy theory.
 
Volume 4:
The SOS Files (Bosch)
A Surprising Scandinavian (Kogan)
The Alapin Opening (Bosch)
Attacking the Slav Stonewall (Volkov)
The Dutch Benoni (Ehlvest)
The Katalymov Variation (Bosch)
The Other Long Diagonal (Flear)
Following Smyslov and Reti (Mikhalchishin)
King’s Gambit Vienna (Reinderman)
Move-order Your Sicilian Opponent (Bosch)
An Indian SOS, Part 1 (Rogozenko)
An Indian SOS, Part 2 (Rogozenko)
Patzer Sees a Check (Flear)
The Bellon Gambit (Mikhalchishin)
Kozul’s SOS against the Rossolimo (Bosch)
Alekhine’s Blunder (Glek & Sedina)
Flexibility Zone (Gurevich)