EntityQ2891654· pop 9· linked from 22 articleschess puzzleSign in to savepuzzle based on the board game chessConnectionschess problemEntityMiddle AgesEntityCarl Friedrich GaussEntityLeonhard EulerEntitycombinatoricsEntitygraph theoryEntitycastlingEntitypuzzleEntitycheckmateEntitychess pieceEntityAdrien-Marie LegendreEntityrules of chessEntityalgebraic notationEntityknight's tourEntityEight queens puzzleEntitychess tacticEntityglossary of chessEntityback-rank checkmateEntityselfmateEntityhelpmateEntityCategoriesChess problemsMathematical chess problems