Problem authors

Problem Source
Problems
Average Difficulty
Lars Huth17Hard
Lars Åström33.8Medium
Lau Lap Chi14.3Medium
Law Wai Hon23.7Medium
Lawry Sorenson25.2Medium
Lech Duraj105.9Hard
Lee Chun Yin17.5Hard
Lenny Wu16.5Hard
Leo Osvald25.8Hard
Leszek Horwath17Hard
Leung Kai Man18.8Hard
Lewin Gan307.1Hard
Li Cheuk Ting27.1Hard
Liam Keliher464.8Medium
Logan Pipes16.6Hard
Loke Gustafsson86.9Hard
Louis Jachiet19Hard
Lovisa Diding23.2Medium
Lucas Schwebler26.8Hard
Lucas Wood13.4Medium
Lucas Xia24.7Medium
Ludo Pulles17.1Hard
Luis Hernández Corbato18.6Hard
Luka Kalinovčić55.5Hard
Luke Son13.3Medium
Lukáš Poláček505.6Hard
Maarten Sijm14.2Medium
Maciej Liskiewicz17Hard
Magne Vikjord36Hard
Magni Steinn Þorbjörnsson35.1Medium
Magnus Heghdal17.8Hard
Magnus Øian24.3Medium
Mahbubul Hasan27.4Hard
Maj Stenmark64.3Medium
Malcolm Sharpe116.3Hard
Manuel Abellanas17.3Hard
Manuel Freire12.8Medium
Maple17.3Hard
Marc Furon35.4Medium
Marc Phua Hsiao Meng106.7Hard
Marc Vinyals156.1Hard
Marcin Kubica16.8Hard
Marcus Isaksson15.4Medium
Margarida Mamede44.6Medium
Marin Tomić94.6Medium
Mario Nakazawa12.2Easy
Marius Andrei16.4Hard
Mark Braganza14.8Medium
Mark Gordon17.4Hard
Mark Theng Kwang Hui27.1Hard
Marko Berezovsky75.4Medium
Marko Ivanković104.1Medium
Markus Dregi46.3Hard
Markus Fanebust Dregi15.7Hard
Markus S. Dregi46.5Hard
Martin Kacer46.2Hard
Martin Kačer16.5Hard
Martin Macko13.7Medium
Martin Tran62.6Easy
Martynas Kriaučiūnas17.7Hard
Massimo Cairo18.9Hard
Mathijs de Weerdt12.9Medium
Matias Holte12.7Easy
Matija Milišić18.8Hard
Mats Petter Pettersson11.5Easy
Mats Petter Wallander19.5Hard
Matt Davison32.5Easy
Matt Fontaine26.4Hard
Matthew Ng Zhen Rui64.3Medium
Matthias Bayerlein13.8Medium
Matthias Ruhl36Hard
Mattias Akke54.9Medium
Max Wilson12.3Easy
Maximilian Fichtl16.5Hard
Maximilliano Utomo Quok37.3Hard
Mees de Vries284.7Medium
Mehfuz A Rahman14.2Medium
Micah Stairs66.2Hard
Michael Baer15.9Hard
Michael Bradet-Legris13.3Medium
Michael C Slattery16.3Hard
Michael Goldwasser74.5Medium
Michael Zmuda11.5Easy
Michael Zündorf47.1Hard
Michal Forišek63.1Medium
Michał Pilipczuk54.6Medium
Michał Sapalski17Hard
Miguel Araújo65.4Medium
Miguel Oliveira66.4Hard
Mikael Goldmann175.4Medium
Mike Domaratzki35.8Hard
Mike Nguyen26.6Hard
Mike Zmuda13.3Medium
Mike de Vries34.3Medium
Mikkel Abrahamsen15.6Hard
Milton King35Medium
Ming-Yee Iu16.7Hard
Misha Ivkov25.7Hard
Mislav Balunović145.8Hard
Mislav Bradač36.9Hard