Crux Mathematicorum

Crux Mathematicorum (CRUX) is an internationally respected source of unique and challenging mathematical problems published by the CMS. Designed primarily for the secondary and undergraduate levels, and also containing some pre-secondary material, it has been referred to as “the best problem solving journal in the world”. All the problems and solutions are fully peer-reviewed for clarity, completeness and rigour by academic and professional mathematicians. Crux includes an “Olympiad Corner” which is particularly helpful for students preparing for math competitions.

Since January 2019, Crux Mathematicorum (CRUX) became a free online publication thanks to the support of the Intact Foundation.  

Read the latest issue of CRUX:


We’re very pleased to welcome submissions of original articles,
new problems, and solutions to problems we’ve published.

For more information, see our Information for Contributors page.

Crux Digital Archive
All issues are open to the public.
(SP) = Solvers and Proposers
Volume Issues (currently 10 issues per year)
v50 (2024)
v49 (2023)
v48 (2022)
v47 (2021)
v46 (2020)
v45 (2019)
v44 (2018)
v43 (2017)
v42 (2016)
v41 (2015)
v40 (2014)
v39 (2013)
v38 (2012)
v37 (2011)
v36 (2010)
v35 (2009)
v34 (2008)
v33 (2007)
v32 (2006)
v31 (2005)
v30 (2004)
v29 (2003)
v28 (2002)
v27 (2001)
v26 (2000)
v25 (1999)
v24 (1998)
v23 (1997)
v22 (1996)
v21 (1995)
v20 (1994)
v19 (1993)
v18 (1992)
v17 (1991)
v16 (1990)
v15 (1989)
v14 (1988)
v13 (1987)
v12 (1986)
v11 (1985)
v10 (1984)
v9 (1983)
v8 (1982)
v7 (1981)
v6 (1980)
v5 (1979)
v4 (1978)
v3 (1977)
v2 (1976)
v1 (1975)

About Crux Mathematicorum:

Back Issues:

Although Crux Mathematicorum is an open online publication, ordering back issues are still available, but limited in quantity, for years prior to 2019 (volume 22 to 44).  Volumes 1 to 21 are only available online.  All content is subject to copyright and permissions.  

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For further inquiries on Crux Mathematicorum, please email us at

The CMS thanks the Intact Foundation for its support of Crux Mathematicorum.