The Koltanowski-Phoenix
The Phoenix Variation of the Colle-Koltanowski

The Koltanowski Phoenix by David Rudel

(Now available at

Reviewed at The Kenilworthian
What is the Koltanowski-Phoenix Attack?

The Koltanowski-Phoenix Attack is a new idea in the Colle-Koltanoski chess opening system, championed by Colle System writer David Rudel. After the standard opening sequence 1.d4 Nf6 2.Nf3 d5 3.e3 e6 4.Nbd2 c5 5.c3 Nc6 6.Bd3 Bd6 (or Be7) 7.0-0 0-0 8.dxc5 Bxc5, White responds  9.b4! (Shown at right)

Though it is not obvious, the b-pawn lunge has significant importance because the Bishop on c5 turns out to be the often unrecognized source of White's troubles in the typical
The Typical Continuation

The typical continuation of the c3-Colle System Opening System main line
continuation 9.e4 Qc7 10.Qe2.

To read a comprehensive account of why White needs a new plan in the Colle System mainline, download the Familiarization chapter from Rudel's book on the Phoenix Attack.

Mike Goeller has posted a review at the Kenilworthian Chess Club Blog.