Fewest blocks

A standard 15 by 15 puzzle has 225 total squares. In general, the fewer the blocks (black squares) the more difficult the puzzle is to solve and certainly to create.

All puzzles with 24 or fewer blocks are shown. The fact that there are puzzles here with fewer than 20 is astounding. (thumbnails)

17 blocks
Joe Krozel
18
Joe Krozel
Joe Krozel
Kevin G. Der
19
Joe Krozel
Joe Krozel
Joe Krozel
Joe Krozel
Joe Krozel
Manny Nosowsky
20
Kevin G. Der
Joe DiPietro
21
Chris A. McGlothlin
Tim Croce
Steve Salitan
Manny Nosowsky
Manny Nosowsky
Patrick Berry
Manny Nosowsky
Jim Hyres
Manny Nosowsky
Manny Nosowsky
Manny Nosowsky
Harvey Estes
Manny Nosowsky
Chuck Menning
Manny Nosowsky
Manny Nosowsky
22
Joe Krozel
Sherry O. Blackard
Manny Nosowsky
23
Mary Lou Guizzo
Timothy Polin
Byron Walden
Doug Peterson
Doug Peterson
Byron Walden
Byron Walden
Byron Walden
Patrick Berry
Manny Nosowsky
Michael Shteyman
24
Byron Walden
John Lampkin
Joe Krozel
Mark Diehl
Martin Ashwood-Smith
Byron Walden
Frank Longo
Brad Wilber
Bob Klahn
Sherry O. Blackard
John Farmer
Sherry O. Blackard
Manny Nosowsky
Bob Klahn
James E. Buell
Patrick Berry
Byron Walden
Sherry O. Blackard
Manny Nosowsky
Sherry O. Blackard
Sherry O. Blackard
Manny Nosowsky
Manny Nosowsky
Bob Klahn
Patrick D. Berry
Bob Klahn
Manny Nosowsky
Manny Nosowsky
Frank Longo


Pre-Shortz