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Problem authors

Problem Source
Problems
Average Difficulty
Goran Gasic35.1Medium
Goran Žužić96.2Hard
Gordon Cormack18Hard
Gordon V. Cormack464.9Medium
Graeme Kemkes12.9Medium
Graeme Zinck23.9Medium
Grayden Price33.9Medium
Greg Hamerly1063.6Medium
Gregor Behnke95.3Medium
Gregor Matl24.6Medium
Gregor Schwarz35.8Hard
Grzegorz Herman37.3Hard
Gu Jin37.1Hard
Gunnar Kreitz115.1Medium
Gustav Kalander96.2Hard
Gustav Matula14.1Medium
Gustav Nilsson Gisleskog55.7Hard
Hannes Kristján Hannesson422.7Easy
Hans Wennborg13.7Medium
Hao Guo13.5Medium
Haochen Chen45.6Hard
Harrison Fang22.5Easy
Harry Smit95.9Hard
Harry Zhang283.8Medium
Harry Zhou56.5Hard
Hazem Issa26.7Hard
Henrik Eriksson43.2Medium
Henry Huang76.3Hard
Henry Wang24.5Medium
Henry Xia46.3Hard
Hjalti Magnússon33.4Medium
Hlíf Arnbjargardóttir13.7Medium
Ho Lyun Jeong106.1Hard
Hon Man Hin36.1Hard
Honwi (Kenneth) Zhen16Hard
Honwi Zhen12.1Easy
Howard Cheng503.8Medium
Howard Whitston32.9Medium
Huang Xing Chen18.5Hard
Hubert Teo Hua Kian36.7Hard
Hugo Eberhard16.1Hard
Hugo Söderbergh32.2Easy
Hung Chun Ho17.6Hard
Håkan Strömberg12.3Easy
Hélène Verhaeghe12.5Easy
Ian DeHaan145Medium
Ian Munro12.9Medium
Ian Parrish14.3Medium
Ignas Kancleris15.7Hard
Igor Naverniouk17.2Hard
Ike Erdman11.4Easy
Illia Shkirko35.8Hard
Inda++1816.8Hard
Ioana Ilena18.5Hard
Irina Kostitsyna15.2Medium
Irvan Jahja85.9Hard
Isaac Arvestad43.8Medium
Isaac Chan13.3Medium
Isaac Lee66.1Hard
Ivan Fefer24Medium
Ivan Fever11.7Easy
Ivan Gaspardy14.4Medium
Ivan Katanić65.7Hard
Ivan Paljak75Medium
Ivona Bezakova86.2Hard
Ivona Bezáková14.3Medium
Ivor Page34.7Medium
Jaap Eldering55.7Hard
Jack Garner62.4Easy
Jack Golden14.3Medium
Jack Rosenthal92.9Medium
Jacob Merizia13.9Medium
Jacob Plachta34.7Medium
Jacob Skitsko17.4Hard
Jacob Zhang85.1Medium
Jacques-Henri Jourdan17.3Hard
Jaehyun Park17.1Hard
Jakob Israelsen24.3Medium
Jakob Krainz35.1Medium
Jakub Onufry Wojtaszczyk75.4Medium
Jakub Pachocki28.2Hard
Jakub Radoszewski15.2Medium
Jakub Tarnawski17.2Hard
Jakub Závodný18.3Hard
Jalal Almhana25Medium
James Feher52.6Easy
James Hughes15Medium
James R (Bob) Bradley12Easy
James Rettie17.6Hard
James Stanley13.2Medium
Jan Elffers45.6Hard
Jan Kuipers85.9Hard
Jan Stoklasa17.5Hard
Jannik Olbrich45.1Medium
Jared Lincenberg13.4Medium
Jasmin Studer14.3Medium
Jason Cannon43.2Medium
Jason Huang25Medium
Jason Liu34.3Medium
Jason Oliphant62.8Easy
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