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21x21 grids with the Most Blocks in the Modern Era

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

Click here to see thumbnails.

Top constructors and grids:

Daniel Bodily Jeff Chen Patrick Blindauer Todd Gross Harvey Estes Alex Vratsanos Finn Vigeland Matthew Stock Will Nediger Miriam Estrin Randolph Ross
Sun 5/29/2022 A Monumental Centennial100
TVADSPANGOGHSASH
HOBOKEPTTROUTUTU
ANEWBIRTHOFFREEDOM
INTERNETEARCLIPS
LINCOLNMEMORIAL
MASSEYSOULSCRAGGY
EVAFDADOZENFADRAE
LOVESICKBAGBENSTEIN
TWIGPERSKYRUEHANS
ORRDOCNODSET
BUREAUCASHCOWSTRESS
EGOTISMBEARDBOOMMIC
ELFLAPAGREEATVANA
PITASHONESTABEERNST
HOPSWARHEROSPEC
CELLARSPACIFIC
CHUICUTAPPOM
LENGTHSPSEOREGANO
AVIATESRINMAHATMA
WROTETOEDTSBALOAN
SENORSSTERNS
Sun 7/2/2017 THE LONG AND WINDING ROAD99
NBCTVIGORSCRIMZAP
ALLIELANASHAMERICO
YOUREALLYGOTAHOLDONME
SOBERLYXERRANARACE
SEALGALLANTS
ALAABBACTAME
HINTATDRINKFEHLAS
ANDALEYOGIIDOSLIC
SEIKOSMACSEXILEMTA
LETTADAVINYLYAP
ELODSTDANLIE
TAVHANOIENGECHO
CLEELANDPLEAPREVIN
HAHMAINLUSHIONIZE
ELENRATAXCOCPSNOW
DARTSTEELGDS
HALFPIPEEARS
CLAMOREDALIRITCHIE
GOTTOGETYOUINTOMYLIFE
OARSEARLYSKISLOYAL
OTSSKILLTYPEETATS
Sun 9/13/2009 LET'S PLAY BINGO97
BSEVENMSSPAIDAWORD
TORINOOWNAURANOSEE
WHALERHEEGFORTYNINE
EASEAGREETONEROXER
LVIVHFTRADEMANATEE
VENTIIDEAMAPENEMY
EIGENFANTASIABOAT
NETTVCOMEINTO
DYADWYOISIXTEEN
DEPOSITSDENT
TARNISHVERMONT
ETREDERAILED
BFIFTEENRNASEWS
ASNEEDEDATLAS
SUITOHMEOHMYPEPSI
NEALERETREATISLET
NEEDLEDSLOBSWIEUAW
ALTLAIDANISTONONME
ISEVENTEENTIECARDIN
LIEINOMNIEARATTEST
SENDSROANDNANFORTY
BlocksDateAuthorWords
100Sun May 29, 2022Daniel Bodily and Jeff Chen131
99Sun Jul 2, 2017Patrick Blindauer142
97Sun Sep 13, 2009Todd Gross134
93Sun Oct 22, 2006Harvey Estes131
92Sun Jun 30, 2013Alex Vratsanos and Jeff Chen134
92Sun Mar 1, 2015Finn Vigeland140
92Sun Mar 6, 2022Matthew Stock and Will Nediger129
90Sun Oct 18, 2020Miriam Estrin139
89Sun Oct 20, 1996R. Ross136
89Sun Feb 29, 2004Patrick Merrell138
89Sun Jan 23, 2011Chris A. McGlothlin148
89Sun Aug 21, 2016Kathy Matheson and Jeff Chen140
89Sun Apr 30, 2023Lewis Rothlein and Jeff Chen140
89Sun May 14, 2023Sid Sivakumar142
89Sun Oct 8, 2023Sid Sivakumar138
88Sun Nov 16, 2008Merl Reagle144
88Sun Jul 23, 2017Caleb Madison140
88Sun Dec 10, 2017Erik Agard and Laura Braunstein136
88Sun Jan 28, 2018Priscilla Clark and Jeff Chen140
88Sun Apr 21, 2024Michael Schlossberg139
88Sun Jul 14, 2024Jeff Chen138
87Sun Feb 5, 2006Eric Berlin136
87Sun Oct 20, 2019Natan Last134
87Sun Mar 27, 2022August Lee-Kovach143
86Sun Nov 21, 1993Peter Gordon150
86Sun Mar 17, 1996Peter O'Gordon142
86Sun Nov 7, 1999Brendan Emmett Quigley142
86Sun Aug 17, 2008Caleb Madison140
86Sun Jun 26, 2022Matthew Stock and Finn Vigeland140
86Sun Nov 12, 2023Garrett Chalfin142
86Sun Aug 18, 2024Rebecca Goldstein and Will Nediger142
85Sun May 6, 2001Manny Nosowsky134
85Sun Sep 7, 2014Tracy Gray and Jeff Chen136
85Sun Dec 18, 2016Derrick Niederman144
85Sun Dec 24, 2017Mary Lou Guizzo and Jeff Chen140
85Sun Sep 15, 2019Andrew Kingsley140
85Sun Jul 24, 2022Jessie Trudeau and Ross Trudeau138
84Sun Jul 10, 1994Alvin Chase140
84Sun Oct 1, 1995Frank A. Longo142
84Sun Apr 14, 1996Henry Hook146
84Sun Jan 26, 1997S. Elliott138
84Sun Sep 16, 2001Bill Zais140
84Sun Jul 13, 2003Randolph Ross142
84Sun Aug 31, 2003Fred Piscop140
84Sun Aug 1, 2004Randolph Ross140
84Sun Aug 8, 2004Bill Zais144
84Sun Jan 29, 2006Rich Norris136
84Sun Jul 22, 2007David Levinson Wilk140
84Sun Apr 27, 2008Oliver Hill142
84Sun Oct 21, 2012Caleb Rasmussen138
84Sun Nov 18, 2012Timothy Polin134
84Sun May 11, 2014Peter A. Collins138
84Sun Aug 30, 2015Lee Taylor138
84Sun Aug 30, 2020Olivia Mitra Framke141
84Sun May 9, 2021Brad Wiegmann140
84Sun Aug 15, 2021Aimee Lucido and Ella Dershowitz142
84Sun Mar 13, 2022Christina Iverson and Katie Hale142
84Sun Oct 9, 2022Jessie Trudeau and Ross Trudeau133
84Sun Sep 10, 2023Adam Wagner140
84Sun Jul 7, 2024David Karp140
84Sun Nov 24, 2024Alex Eaton-Salners142
84Sun Jan 12, 2025Jeffrey Martinovic138
83Sun Nov 10, 2002Cathy Millhauser142
83Sun Jan 26, 2003Nancy Salomon and Bob Peoples140
83Sun Apr 17, 2005Manny Nosowsky142
83Sun May 29, 2005Frank Longo138
83Sun Jun 17, 2012Kyle T. Dolan140
83Sun Sep 1, 2013John Farmer140
83Sun Feb 2, 2014Dick Shlakman and Jeff Chen140
83Sun Aug 8, 2021Christina Iverson and Jeff Chen130
83Sun Feb 12, 2023Christina Iverson and Samuel A. Donaldson142
83Sun Jan 28, 2024Nathan Hasegawa140
83Sun Jun 30, 2024Ginny Too142
83Sun Dec 29, 2024Harry Zheng136
82Sun Feb 13, 1994Cathy Millhauser142
82Sun Apr 3, 1994Ernie Furtado140
82Sun Feb 19, 1995Alfio Micci142
82Sun Mar 19, 1995Alex K. Justin138
82Sun Sep 3, 1995Ernie Furtado142
82Sun Feb 18, 1996Norma Steinberg138
82Sun Jun 15, 1997Karen Hodge142
82Sun Jan 4, 1998Mark Danna140
82Sun Apr 19, 1998Rich Norris140
82Sun May 3, 1998Brendan Emmett Quigley142
82Sun Jul 5, 1998Joe DiPietro140
82Sun Dec 27, 1998Rich Norris140
82Sun Jan 30, 2000Peter Gordon140
82Sun Jun 25, 2000Cathy Millhauser140
82Sun May 20, 2001Alan Arbesfeld140
82Sun May 27, 2001Dana Motley140
82Sun Oct 28, 2001Michael Ashley140
82Sun Dec 2, 2001Nancy Nicholson Joline140
82Sun May 4, 2003Tyler Hinman140
82Sun Apr 18, 2004Richard Chisholm140
82Sun Jul 31, 2005Mark Feldman140
82Sun Oct 2, 2005Randolph Ross142
82Sun Sep 7, 2008Randolph Ross138
82Sun Jan 11, 2009David J. Kahn144
82Sun Jan 3, 2010Jeremy Newton140
82Sun Apr 3, 2011Oliver Hill and Eliza Bagg140
82Sun May 12, 2013David J. Kahn134
82Sun Jun 16, 2013Mel Rosen134
82Sun Sep 22, 2013Mike Selinker142
82Sun Dec 15, 2013Jeff Chen140
82Sun Mar 8, 2015Tom McCoy140
82Sun Sep 20, 2015Jason Mueller and Jeff Chen142
82Sun May 29, 2016Kevin G. Der140
82Sun Sep 18, 2016Jeremy Newton140
82Sun May 28, 2017Andrew Zhou140
82Sun Jan 7, 2018David Steinberg140
82Sun Dec 2, 2018Paul Coulter140
82Sun Feb 16, 2020Sam Ezersky138
82Sun Mar 28, 2021Olivia Mitra Framke140
82Sun May 16, 2021Joe DiPietro140
82Sun Dec 5, 2021Chase Dittrich and Jeff Chen142
82Sun Jul 17, 2022Greg Slovacek142
82Sun Dec 10, 2023Zachary David Levy and Jeff Chen140
82Sun Dec 17, 2023Jeremy Newton140
82Sun Nov 17, 2024Rebecca Goldstein and Ariela Perlman141
82Sun Jan 26, 2025Rich Proulx140
81Sun Dec 26, 1993Tom Underhill138
81Sun Jan 21, 1996R. Wolfe140
81Sun Apr 7, 1996C. Millhauser138
81Sun Mar 29, 1998Robert H. Wolfe142
81Sun Dec 31, 2000Elizabeth C. Gorski140
81Sun Aug 12, 2001Nancy Nicholson Joline140
81Sun Aug 10, 2014Elizabeth C. Gorski139
81Sun Feb 15, 2015Ellen Leuschner and Jeff Chen140
81Sun Jul 26, 2015Ellen Leuschner and Jeff Chen140
81Sun Oct 4, 2015Jeremy Newton140
81Sun Jul 24, 2016David Steinberg140
81Sun Mar 26, 2017Tracy Gray and Jeff Chen138
81Sun Dec 15, 2019Christina Iverson and Jeff Chen143
81Sun Mar 29, 2020Ricky Cruz140
81Sun Sep 6, 2020David Kwong140
81Sun Dec 13, 2020Dan Margolis140
81Sun Jun 27, 2021Ross Trudeau and Lindsey Hobbs141
81Sun Jan 30, 2022Ross Trudeau137
81Sun Jun 19, 2022Jeremy Newton132
81Sun Apr 14, 2024John Rippe and Jeff Chen141
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