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Problem authors
Problem Source
Problems
Average Difficulty
Lars Huth
1
7
Hard
Lars Åström
3
3.8
Medium
Lau Lap Chi
1
4.3
Medium
Law Wai Hon
2
3.7
Medium
Lawry Sorenson
2
5.2
Medium
Lech Duraj
10
5.9
Hard
Lee Chun Yin
1
7.5
Hard
Lenny Wu
1
6.5
Hard
Leo Osvald
2
5.8
Hard
Leszek Horwath
1
7
Hard
Leung Kai Man
1
8.8
Hard
Lewin Gan
30
7.1
Hard
Li Cheuk Ting
2
7.1
Hard
Liam Keliher
46
4.8
Medium
Logan Pipes
1
6.6
Hard
Loke Gustafsson
8
6.9
Hard
Louis Jachiet
1
9
Hard
Lovisa Diding
2
3.2
Medium
Lucas Schwebler
2
6.8
Hard
Lucas Wood
1
3.4
Medium
Lucas Xia
2
4.7
Medium
Ludo Pulles
1
7.1
Hard
Luis Hernández Corbato
1
8.6
Hard
Luka Kalinovčić
5
5.5
Hard
Luke Son
1
3.3
Medium
Lukáš Poláček
50
5.6
Hard
Maarten Sijm
1
4.2
Medium
Maciej Liskiewicz
1
7
Hard
Magne Vikjord
3
6
Hard
Magni Steinn Þorbjörnsson
3
5.1
Medium
Magnus Heghdal
1
7.8
Hard
Magnus Øian
2
4.3
Medium
Mahbubul Hasan
2
7.4
Hard
Maj Stenmark
6
4.3
Medium
Malcolm Sharpe
11
6.3
Hard
Manuel Abellanas
1
7.3
Hard
Manuel Freire
1
2.8
Medium
Maple
1
7.3
Hard
Marc Furon
3
5.4
Medium
Marc Phua Hsiao Meng
10
6.7
Hard
Marc Vinyals
15
6.1
Hard
Marcin Kubica
1
6.8
Hard
Marcus Isaksson
1
5.4
Medium
Margarida Mamede
4
4.6
Medium
Marin Tomić
9
4.6
Medium
Mario Nakazawa
1
2.2
Easy
Marius Andrei
1
6.4
Hard
Mark Braganza
1
4.8
Medium
Mark Gordon
1
7.4
Hard
Mark Theng Kwang Hui
2
7.1
Hard
Marko Berezovsky
7
5.4
Medium
Marko Ivanković
10
4.1
Medium
Markus Dregi
4
6.3
Hard
Markus Fanebust Dregi
1
5.7
Hard
Markus S. Dregi
4
6.5
Hard
Martin Kacer
4
6.2
Hard
Martin Kačer
1
6.5
Hard
Martin Macko
1
3.7
Medium
Martin Tran
6
2.6
Easy
Martynas Kriaučiūnas
1
7.7
Hard
Massimo Cairo
1
8.9
Hard
Mathijs de Weerdt
1
2.9
Medium
Matias Holte
1
2.7
Easy
Matija Milišić
1
8.8
Hard
Mats Petter Pettersson
1
1.5
Easy
Mats Petter Wallander
1
9.5
Hard
Matt Davison
3
2.5
Easy
Matt Fontaine
2
6.4
Hard
Matthew Ng Zhen Rui
6
4.3
Medium
Matthias Bayerlein
1
3.8
Medium
Matthias Ruhl
3
6
Hard
Mattias Akke
5
4.9
Medium
Max Wilson
1
2.3
Easy
Maximilian Fichtl
1
6.5
Hard
Maximilliano Utomo Quok
3
7.3
Hard
Mees de Vries
28
4.7
Medium
Mehfuz A Rahman
1
4.2
Medium
Micah Stairs
6
6.2
Hard
Michael Baer
1
5.9
Hard
Michael Bradet-Legris
1
3.3
Medium
Michael C Slattery
1
6.3
Hard
Michael Goldwasser
7
4.5
Medium
Michael Zmuda
1
1.5
Easy
Michael Zündorf
4
7.1
Hard
Michal Forišek
6
3.1
Medium
Michał Pilipczuk
5
4.6
Medium
Michał Sapalski
1
7
Hard
Miguel Araújo
6
5.4
Medium
Miguel Oliveira
6
6.4
Hard
Mikael Goldmann
17
5.4
Medium
Mike Domaratzki
3
5.8
Hard
Mike Nguyen
2
6.6
Hard
Mike Zmuda
1
3.3
Medium
Mike de Vries
3
4.3
Medium
Mikkel Abrahamsen
1
5.6
Hard
Milton King
3
5
Medium
Ming-Yee Iu
1
6.7
Hard
Misha Ivkov
2
5.7
Hard
Mislav Balunović
14
5.8
Hard
Mislav Bradač
3
6.9
Hard
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