Boekelman Jan. The Modernized O'Kelly Sicilian

Thinkers Publishing, 2022. — 388 p. — ISBN 978-94644201666.The O’Kelly is the 5th most popular response to 2.Nf3 in the Sicilian. It is a sound weapon and still contains a lot of surprise value. You will notice this in the time White generally takes for his third move when you play on one of the internet platforms. With some general knowledge about the Sicilian Defence and good theoretical preparation, built on the basis of the lines presented in this book, you will have an excellent starting point to obtain good results in this intriguing chess opening.