Win $1,111 and
have fun solving the
Brain Teaser!
The 11th edition of the Greenberg's Handbook of Neurosurgery is now shipping in the Americas, and is scheduled to start shipping everywhere else in September, 2026.
Image from the cover of the 11th edition of
Greenberg's Handbook of Neurosurgery. Image copyright Thieme Medical Publishers.
Click the image for a high-resolution version.
Greenberg Eleven Contest One
On the cover of the book is a collage of the human brain constructed from medical imaging studies and 23 non‑medical imaging objects. In honor of the 11th edition, each of these 23 objects has a link to the number 11.
Be the first to find all 23 of the non-medical objects in the brain collage (or find more objects than anyone else by the contest deadline) and explain each object's link to the number 11, and you will win a cash prize of $1,111 and an autographed copy of the 11th edition of Greenberg's Handbook of Neurosurgery. See the full official contest rules by clicking on the link below.
Contest closes 11:00 AM Eastern, February 11, 2027
A convenient entry form is available by clicking the link below. You may download and fill out this form and attach it to an email addressed to editor@grgraphics.com with the subject line “Greenberg Eleven Contest One Entry.” Use of this form is recommended to ensure accurate processing of your entry.
You will need to zoom in to solve the puzzle! Click below for a high-resolution version of the cover image, which opens in a new window. This high resolution version is the official image for the contest, and contains any updates and refinements.
Click here for a high-resolution image ↗For the current leader, possible hints and clues and announcements, click below
See current contest status ↗