\newchapter{Latin squares} \leveldown{} Magic/Latin square is a square filled with numbers/letters, which are all distinct in each row and column. Sudoku is 9*9 magic square with additional constraints (for each 3*3 subsquare). \newcommand{\TAOCPCombSearching}{Donald Knuth -- \ac{TAOCP} -- Introduction to combinatorial searching \footnote{\url{https://yurichev.com/mirrors/Donald\%20Knuth/TAOCP\%200a\%207/fasc0a.pdf}}} \input{latin/simple/main_EN} \input{latin/MOLS_naive/main_EN} \input{latin/MOLS_transv/main_EN} \input{latin/practice} \myheading{Further reading} \begin{itemize} \item \TAOCPCombSearching{}. \item Martin Gardner -- New Mathematical Diversions, 1995, pp 162-172. \item Combinatorics: Ancient \& Modern (2013), Lars Døvling Andersen -- Latin Squares, pp 251-283. \item Hantao Zhang -- Combinatorial Designs by SAT Solvers\footnote{ \url{https://www.researchgate.net/publication/242029072_Combinatorial_Designs_by_SAT_Solvers}, \url{https://ebooks.iospress.nl/volumearticle/5002}, \url{https://ebooks.iospress.nl/volumearticle/56529}.}. \end{itemize} \levelup{}