Invitation to the 20th  ISC

The International Solving Contest next year will take place on Sunday 21.01.2024. The event is happening simultaneously in all participating countries.
There will be three categories: one for experienced solvers. The second category is intended for weaker, inexperienced solvers. This second category is not open for solvers with a rating (or half-rating or non-active-rating) of more than 2000. The third category is intended for youngsters born after 31.12.2010.

The name of the locally appointed controller must reach the central controllers by email not later than

Announcement of 20th ISC | Rules of ISC

Arvydas Mockus, 20th ISC Controller

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