Problem authors

Problem Source	Problems	Average Difficulty
Law Wai Hon	2	3.7Medium
Lawry Sorenson	15	4.8Medium
Lech Duraj	10	6Hard
Lee Chun Yin	1	7.2Hard
Lenny Wu	1	6.1Hard
Leo Osvald	2	5.6Hard
Leszek Horwath	1	6.8Hard
Leung Kai Man	1	8.3Hard
Levi Sprung	1	1.8Easy
Lewin Gan	30	7.2Hard
Li Cheuk Ting	2	8.3Hard
Liam Keliher	46	4.7Medium
Liam Warfield	1	1.7Easy
Logan Pipes	1	6.7Hard
Loke Gustafsson	9	6.5Hard
Louis Jachiet	1	9Hard
Lovisa Diding	2	3.2Medium
Luca Versari	1	8.9Hard
Lucas Alber	1	4.7Medium
Lucas Gretta	3	6Hard
Lucas Schwebler	3	6.9Hard
Lucas Wood	1	3.4Medium
Lucas Xia	3	6Hard
Ludo Pulles	3	6.7Hard
Luis Hernández Corbato	1	8.4Hard
Luka Kalinovčić	5	5.5Hard
Luke DiGiovanna	1	8Hard
Luke Son	1	3.3Medium
Lukáš Poláček	50	5.6Hard
Maarten Sijm	9	4.3Medium
Maceo Cardinale Kwik	1	8Hard
MachineFossil	1	4Medium
Maciej Liskiewicz	1	6.7Hard
Magne Vikjord	3	5.7Hard
Magni Steinn Þorbjörnsson	5	6.3Hard
Magnus Heghdal	1	8.1Hard
Magnus Øian	2	4Medium
Mahbubul Hasan	2	8.1Hard
Maj Stenmark	9	3.3Medium
Malcolm Sharpe	11	6.1Hard
Manuel Abellanas	1	7.6Hard
Manuel Freire	1	2.7Easy
Manuel Torres Cid	1	7Hard
Maple	1	7.4Hard
Marc Furon	3	5.6Hard
Marc Phua Hsiao Meng	10	6.6Hard
Marc Vinyals	15	6.1Hard
Marcel Wienöbst	3	5.4Medium
Marcin Kubica	1	7Hard
Marcus Isaksson	1	5.4Medium
Margarida Mamede	4	4.4Medium
Marian Zuska	1	5.3Medium
Marin Tomić	9	4.5Medium
Mario Nakazawa	1	2.2Easy
Marius Andrei	1	6.1Hard
Mark Braganza	1	6Hard
Mark Gordon	1	7.1Hard
Mark McCormick	1	7.4Hard
Mark Sturtevant	2	4.9Medium
Mark Theng Kwang Hui	2	6.9Hard
Marko Berezovsky	7	5.3Medium
Marko Ivanković	10	4.1Medium
Markus Dregi	4	6.4Hard
Markus Fanebust Dregi	1	5.4Medium
Markus S. Dregi	4	6.5Hard
Martin Kacer	4	6.5Hard
Martin Kačer	1	7.2Hard
Martin Macko	1	3.7Medium
Martin Tran	6	2.5Easy
Martynas Kriaučiūnas	1	6Hard
Massimo Cairo	1	9.1Hard
Mateusz Radecki	1	7.6Hard
Mathijs de Weerdt	1	2.8Medium
Matias Holte	1	2.4Easy
Matija Milišić	1	8.9Hard
Mats Petter Pettersson	1	1.4Easy
Mats Petter Wallander	1	9.4Hard
Matt Davison	3	2.4Easy
Matt Fontaine	2	6.7Hard
Matt Iverson	1	6.4Hard
Matthew Iverson	1	2.2Easy
Matthew Ng Zhen Rui	6	4.2Medium
Matthias Bayerlein	1	3.7Medium
Matthias Ruhl	3	7.2Hard
Mattias Akke	5	5Medium
Max Nilsson	1	5.7Hard
Max Wilson	1	2.3Easy
Maximilian Fichtl	1	6.5Hard
Maximilliano Utomo Quok	9	5.7Hard
Mees de Vries	34	4.5Medium
Mehfuz A Rahman	1	2.3Easy
Mete Saka	2	3.3Medium
Micah Stairs	6	6Hard
Michael Baer	1	6.3Hard
Michael Bradet-Legris	1	3.2Medium
Michael C Slattery	1	6.2Hard
Michael Goldwasser	7	4.7Medium
Michael Ruderer	1	6.2Hard
Michael Zmuda	1	1.5Easy
Michael Zündorf	24	6.2Hard

1...5 6 7...10