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15x15 grids with the Most Blocks in the Shortz Era

An unusually high black square count usually means something interesting is going on with these puzzles.

Thumbnails for the first few are below. Click here to see all the thumbnails.

Fri 4/8/201156
NEBSTSK
ALAPCOLDALE
TERRTHEUNKEN
UVEASMILEEEN
RABIDCCSAVE
ATONESFEETBED
LONELIESTDALY
DREDTNTVICE
SIBSFACEMASKS
OSUWATERGLASS
VATASHRILED
ISTSTOWEALAR
ETOHEMANNOTE
TENNERDCWTS
SRSESOS
Thu 10/15/201554
HOEDSPAMAMS
ITEESULNELEIE
TOSCASNAILSHEL
OTSTRCAOIK
YLELOGGLDES
ACESSATREV
RATFITTWLC
FLMBWILOORALY
NESAEITLAA
ROKPEETASY
SHDDRMILKWA
AMIMIDSTEO
GUGENHEIMGAUZS
AGSGATNAEMRLA
DTSDRYSSLAW
Thu 3/16/200053
BOGJOE
CLOAKFATAL
POOHBAHORBISON
ANTSREUNESITE
MATCLATTERETA
NOAHDAHEBRO
SAYCHEESE
AZALEABRIEFS
PROEASTERNOUT
EEOTHEMASKUSE
PALSIMNPR
URANIAORATES
PUTONAHAPPYFACE
GRINANDBEARIT
YRSCDSNON
Thu 2/28/201352
PROANDCON
NIVEKSOUTBONO
OFERVERSEFIDE
MENADESTROLLED
SITCHA
SCIENCEGESTION
TONSHIBITSODY
AMSNERNIE
NETOGEALSSIST
STRAINSSTRICTS
TRAAIR
FITEERSCLAIMED
IFERLOGUENOTE
CHESSORTSGRAM
TEMTESNTO
Wed 12/20/201751
TSARMOTIFS
MEETUPAVENUE
TORPEDOSREADER
HASTESTESMILE
ONEEIGHTGIN
MARCSARGELENA
LLCSSIZING
FOURFIVE
TOUCANMETE
CORDPOWERSASS
HRSSEVENTWO
INANEAIDANEED
DAKOTAREDHEADS
EDENICLIAISE
SONANTNINE
BlocksDateAuthor
56Fri Apr 8, 2011Joe Krozel
54Thu Oct 15, 2015Kevin G. Der
53Thu Mar 16, 2000Peter Gordon
52Thu Feb 28, 2013Joe Krozel
51Wed Dec 20, 2017Talitha Randall
50Fri Jan 21, 1994A.J. Santora
50Mon Nov 28, 1994Jonathan Schmalzbach
48Mon Sep 9, 2002William I. Johnston
48Thu Jun 19, 2008Joe Krozel
48Thu Dec 30, 2010Joe Krozel
48Sat Jun 29, 2013Joe Krozel
48Thu Jul 25, 2013Patrick Blindauer
48Thu Apr 2, 2015Joe Krozel and Timothy Polin
47Thu Feb 3, 1994A.J. Santora
47Fri Nov 10, 1995Bryant White
47Thu Sep 11, 2014Patrick Blindauer
47Sat Jul 18, 2015Joe Krozel
47Fri Oct 16, 2015Joe Krozel
47Thu Sep 28, 2017Joe Krozel
46Mon Dec 6, 1993Peter Gordon
46Mon Feb 7, 1994Sidney L. Robbins
46Tue Mar 1, 1994D.J. Listort
46Fri Oct 28, 1994Bryant White
46Wed Nov 26, 1997Nancy Schuster
46Tue Jan 16, 2001Peter Gordon
46Thu Sep 11, 2008Caleb Madison
46Tue Mar 17, 2009Richard Chisholm
46Fri Jun 1, 2012Joe Krozel
46Mon Jul 2, 2012Bernice Gordon
46Thu Mar 5, 2015Jim Peredo
46Wed Oct 14, 2015Joel Fagliano
46Tue Nov 3, 2015Brendan Emmett Quigley and Joel Fagliano
46Thu Feb 18, 2016Bruce Haight
46Thu Mar 9, 2017Jeremy Newton
45Thu Sep 2, 2004David J. Kahn
45Tue Dec 23, 2008Joe Krozel
45Fri May 8, 2009John Farmer
45Wed May 4, 2011Jeff Chen
45Fri Feb 27, 2015Julian Lim
45Sat Jan 23, 2016Kameron Austin Collins
45Sat Jun 18, 2016Todd Gross
44Wed Dec 8, 1993Norma Steinberg
44Thu Dec 30, 1993A.J. Santora
44Wed Jan 26, 1994Kenneth Haxton
44Tue Feb 15, 1994Jonathan Schmatzbach
44Fri Feb 25, 1994Bob Lubbers
44Mon Feb 28, 1994Sidney L. Robbins
44Fri Apr 15, 1994Cathy Millhauser
44Fri May 27, 1994Chet Currier
44Mon Jun 13, 1994John Greenman
44Sat Jul 2, 1994Bryant White
44Wed Jul 13, 1994Jonathan Schmatzbach
44Thu Jul 28, 1994Bryant White
44Thu Sep 22, 1994George Quincy
44Thu Jan 26, 1995A.J. Santora
44Thu Apr 13, 1995Glenn E. Sykes
44Fri Sep 1, 1995Thomas W. Schier
44Thu Sep 14, 1995Chuck Deodene
44Sat Sep 30, 1995Bryant White
44Fri Mar 15, 1996A. J. Santora
44Tue Apr 23, 1996N. Steinberg
44Mon Nov 10, 1997Grace Fabbroni
44Mon Jan 12, 1998John Greenman
44Thu Dec 10, 1998Peter Gordon
44Wed Apr 21, 1999Mary E. Brindamour
44Wed Jan 5, 2000D. J. DeChristopher
44Wed Sep 26, 2001Stephen Budiansky
44Tue Nov 13, 2001Nancy Salomon and Bob Peoples
44Tue Dec 11, 2001A. J. Santora
44Sat May 3, 2003John Scott Marrone
44Thu Jun 19, 2003Randolph Ross
44Tue Sep 21, 2004Andrea Carla Michaels
44Tue Sep 28, 2004Nancy Kavanaugh
44Mon Dec 5, 2005Gary Steinmehl
44Wed Jan 11, 2006Mel Rosen
44Mon May 22, 2006Edgar R. Fontaine
44Thu Sep 7, 2006Lucy Gardner Anderson
44Wed Oct 18, 2006John Farmer
44Mon Jan 8, 2007Harriet Clifton
44Tue Feb 20, 2007Jonathan Gersch
44Wed Jul 4, 2007Patrick Blindauer
44Mon Mar 3, 2008C. W. Stewart
44Wed Aug 6, 2008Caleb Madison
44Thu Apr 2, 2009Brendan Emmett Quigley
44Wed Sep 23, 2009Jonathan Gersch
44Thu Nov 12, 2009Brendan Emmett Quigley
44Tue Dec 8, 2009Joe Krozel
44Thu Jul 1, 2010Clive Probert
44Tue Mar 15, 2011Jeremy Newton
44Fri Aug 12, 2011Julian Lim
44Tue Jun 19, 2012Steve Riley
44Wed Jul 18, 2012David Levinson Wilk
44Fri Aug 24, 2012Mark Diehl
44Tue Oct 9, 2012John Guzzetta
44Mon Jun 24, 2013Robert Seminara
44Mon Jul 8, 2013Randy Sowell
44Thu Apr 17, 2014Mary Lou Guizzo and Jeff Chen
44Thu May 1, 2014Brandon Hensley
44Wed Mar 25, 2015Jacob Stulberg
44Thu Jan 12, 2017Joe Krozel
44Mon Mar 20, 2017Neil deGrasse Tyson and Andrea Carla Michaels
44Tue Mar 28, 2017Ryan Milligan
44Mon Jun 26, 2017Brian Greer
44Thu Aug 2, 2018Xan Vongsathorn
44Wed Aug 8, 2018Andrew Kingsley