Problem authors

Problem Source
Problems
Average Difficulty
Kostiantyn Denysov14.7Medium
Kriangsiri Malasri94.4Medium
Kristof Unterweger15.6Hard
Kristoffer Arnsfelt Hansen16Hard
Kristoffer Æsøy34.7Medium
Kuan Wei Heng13.5Medium
Kwee Lung Sin37.3Hard
Kyle H18.4Hard
Kyle See26.1Hard
Lalitha Kuppa33.6Medium
Lammert Westerdijk11.8Easy
Lap Chi Lau15.4Medium
Larry D. Pyeatt26Hard
Larry Pyeatt32.8Easy
Lars Huth16.8Hard
Lars Åström33.6Medium
Lau Lap Chi15Medium
Law Wai Hon23.7Medium
Lawry Sorenson184.5Medium
Lech Duraj106.1Hard
Lee Chun Yin17Hard
Lenny Wu16Hard
Leo Osvald25.2Medium
Leszek Horwath16.7Hard
Leung Kai Man18.4Hard
Levi Sprung11.7Easy
Lewin Gan307.1Hard
Li Cheuk Ting28Hard
Liam Keliher514.7Medium
Liam Warfield11.6Easy
Logan Pipes16.6Hard
Loke Gustafsson96.5Hard
Louis Jachiet18.9Hard
Lovisa Diding23.2Medium
Luca Versari19Hard
Lucas Alber15.3Medium
Lucas Gretta36.1Hard
Lucas Schwebler36.4Hard
Lucas Weaver14.1Medium
Lucas Wood13.3Medium
Lucas Xia35.5Hard
Ludo Pulles37.1Hard
Luis Hernández Corbato18.4Hard
Luka Kalinovčić55.1Medium
Luke DiGiovanna17.2Hard
Luke Son13.2Medium
Lukáš Poláček505.6Hard
Maarten Sijm93.7Medium
Maceo Cardinale Kwik18Hard
MachineFossil13.2Medium
Maciej Liskiewicz17.1Hard
Magne Vikjord35.8Hard
Magni Steinn Þorbjörnsson56.5Hard
Magnus Heghdal18.6Hard
Magnus Øian24.1Medium
Magnús Már Halldórsson54.6Medium
Mahbubul Hasan27.5Hard
Maj Stenmark93.1Medium
Malcolm Sharpe116Hard
Manuel Abellanas17.2Hard
Manuel Freire12.6Easy
Manuel Torres Cid17Hard
Maple17.4Hard
Marc Furon35.4Medium
Marc Phua Hsiao Meng106.4Hard
Marc Vinyals156.1Hard
Marcel Wienöbst35Medium
Marcin Kubica17.1Hard
Marcus Isaksson15.3Medium
Margarida Mamede44.4Medium
Marian Zuska14.6Medium
Marin Tomić94.4Medium
Mario Nakazawa12.2Easy
Marius Andrei16.2Hard
Mark Braganza15Medium
Mark Gordon17.4Hard
Mark McCormick18.1Hard
Mark Sturtevant83.4Medium
Mark Theng Kwang Hui26.8Hard
Mark Wen27.2Hard
Marko Berezovsky75.2Medium
Marko Ivanković103.9Medium
Markus Dregi46.4Hard
Markus Fanebust Dregi15.4Medium
Markus S. Dregi46.3Hard
Martin Kacer46.2Hard
Martin Kačer17.5Hard
Martin Macko13.6Medium
Martin Tran62.5Easy
Martynas Kriaučiūnas15.5Medium
Massimo Cairo19.1Hard
Mateusz Radecki17.5Hard
Mathijs de Weerdt12.8Medium
Matias Holte12.3Easy
Matija Milišić19Hard
Mats Petter Pettersson11.4Easy
Mats Petter Wallander19.2Hard
Matt Davison32.3Easy
Matt Fontaine26.8Hard
Matt Iverson16.8Hard