Problem authors

Problem Source
Problems
Average Difficulty
Kostiantyn Denysov15Medium
Kriangsiri Malasri94.1Medium
Kristof Unterweger15.4Medium
Kristoffer Arnsfelt Hansen16Hard
Kristoffer Æsøy34.2Medium
Kuan Wei Heng13.7Medium
Kwee Lung Sin37.5Hard
Kyle H18.5Hard
Kyle See26.1Hard
Lalitha Kuppa33.5Medium
Lammert Westerdijk11.9Easy
Lap Chi Lau15.3Medium
Larry D. Pyeatt25.8Hard
Larry Pyeatt32.7Easy
Lars Huth16.8Hard
Lars Åström33.7Medium
Lau Lap Chi15.4Medium
Law Wai Hon23.6Medium
Lawry Sorenson184.4Medium
Lech Duraj106.1Hard
Lee Chun Yin17Hard
Lenny Wu15.5Hard
Leo Osvald25.4Medium
Leszek Horwath16.8Hard
Leung Kai Man18.1Hard
Levi Sprung11.7Easy
Lewin Gan307.1Hard
Li Cheuk Ting28.1Hard
Liam Keliher514.7Medium
Liam Warfield11.5Easy
Logan Pipes16.6Hard
Loke Gustafsson96.2Hard
Louis Jachiet18.9Hard
Lovisa Diding23.2Medium
Luca Versari19Hard
Lucas Alber14.7Medium
Lucas Gretta36.3Hard
Lucas Schwebler36.7Hard
Lucas Weaver14.5Medium
Lucas Wood13.3Medium
Lucas Xia35.6Hard
Ludo Pulles37.2Hard
Luis Hernández Corbato18.4Hard
Luka Kalinovčić55.1Medium
Luke DiGiovanna16.5Hard
Luke Son13.1Medium
Lukáš Poláček505.6Hard
Maarten Sijm93.8Medium
Maceo Cardinale Kwik17.3Hard
MachineFossil13.3Medium
Maciej Liskiewicz17.3Hard
Magne Vikjord35.6Hard
Magni Steinn Þorbjörnsson56.4Hard
Magnus Heghdal18.6Hard
Magnus Øian23.8Medium
Magnús Már Halldórsson54.6Medium
Mahbubul Hasan27.6Hard
Maj Stenmark93.1Medium
Malcolm Sharpe116Hard
Manuel Abellanas17.2Hard
Manuel Freire12.6Easy
Manuel Torres Cid17Hard
Maple17.6Hard
Marc Furon35.5Hard
Marc Phua Hsiao Meng106.5Hard
Marc Vinyals156Hard
Marcel Wienöbst35.1Medium
Marcin Kubica17.2Hard
Marcus Isaksson15.2Medium
Margarida Mamede44.4Medium
Marian Zuska14.2Medium
Marin Tomić94.4Medium
Mario Nakazawa12.2Easy
Marius Andrei16.4Hard
Mark Braganza14.4Medium
Mark Gordon17.6Hard
Mark McCormick18.2Hard
Mark Sturtevant83.4Medium
Mark Theng Kwang Hui26.7Hard
Mark Wen27.3Hard
Marko Berezovsky75.1Medium
Marko Ivanković103.8Medium
Markus Dregi46.4Hard
Markus Fanebust Dregi15.3Medium
Markus S. Dregi46.2Hard
Martin Kacer46.4Hard
Martin Kačer17.7Hard
Martin Macko13.6Medium
Martin Tran62.4Easy
Martynas Kriaučiūnas15Medium
Massimo Cairo19.1Hard
Mateusz Radecki17.6Hard
Mathijs de Weerdt12.7Easy
Matias Holte12.3Easy
Matija Milišić18.9Hard
Mats Petter Pettersson11.3Easy
Mats Petter Wallander19.2Hard
Matt Davison32.3Easy
Matt Fontaine26.8Hard
Matt Iverson15.4Medium