Puzzle Archive

December 2020 solution

The four completed grids are shown to the left, and below them is the sum of the corresponding entries, whose sums of squares came to 8520. Below is the list of the successful solvers of the December challenge!

Guillermo Wildschut
Alex Kalbach
Will Liao
Conor Mac Amhlaoibh
old-importance
cts
Zhou Fan
Neil Thistlethwaite
Anton Puhach
S├ębastien Geeraert
Sean Egan
googlweknoall
Cubist
Arek Balata
Iron_Forge
Lyudmil D. Kouzmanov
Walter Sebastian Gisler
DT
DI LIU
Kilian B.
Wula
Alen Abdrakhmanov
Ben Reiniger
Jak
AdiR8
Kelvin Davis
cshr
Edward Wall
Maria Kormacheva
Keith Schneider
Leif Metcalf
Team J
Martin Hesselborn
Brian S. Hong
Janko Sustersic
Christopher Wiriawan
AR
Wen Zhengyu
Aaditya Raghavan
Valerii Gusman
Arne Schneuing
Jule Schneuing
Caroline R Norman
Eugene Du
Tianyuan Chen
Alex Lang
Kyle Franke
Maurits van Altvorst
Kabakulak
Karl Mahlburg
Altafen
Senthil Rajasekaran
Erik-Cristian Seulean
Ondrej Skacel
stonks
Dan Lin
Lee Chong Wei
needmoreram
kaq
ShibaHana
AQW
Ian Sleightholme
Ovidiu
Rajat Chandra, Salil Chandra, and Dimitri Petrakis
Toppy Zhang
Christian Gonzalez
Leif Cooper
Glauber Guarinello
Sanandan Swaminathan
Sangram Patil
Gareth Owen
Garrett Andersen
Eike
Dimas Ramos
xXD4rkS0nic05Xx
Santa Claus
Sergio Solorzano Rocha
Fernando Martin
Omar Saadi
Rodrigo Amorim
Tomer Tzadok
yani
Vaskor Basak
Will Christerson
Roman Rubanenko
Heidi Stockton
Krzysztof Blach
ssundarr
Sergey Tychinin
Rahul Saxena
Tom Hindley
Jiba Da
Calvin Pozderac
m1ckyro5a
Willem Hoek
Michael DeLyser
Reda Fatoiki
Luca Ambroz
Sunny Duan
Andrew Argatkiny