International Master Maxim Chetverik’s book covers the Bogo-Indian Defense which is normally arrived at after the moves 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+. This book additionally covers Catalan-Bogo hybrids, in particular, the Bogo response to the Catalan Opening with 1.d4 Nf6 2.c4 e6 3.g3 Bb4+. Maxim is a big expert in this opening, having played it in 76 official games as of the publication date, and one of his full games as well as several fragments from his play are included in this volume.