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Dictionnaire mathématiques récréatives
C
Cabalistic Chessboard
Cabalistic Square
Cabalistic Triangle
Calculator
Calendar
Caliban
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Camel
Cantor Set
Captain's Age
Capture
Cardan Rings
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Carousel Number
Carroll Wounded
Carroll Clock
Carroll Diagram
Casting Out Nines
Catalan Equation
Catalan Number
Catalogues
Cell
Centered Number
Chameleon
Chang Formula
Checker
Checkerboard
Cheery Sequence
Cheskers
Chess
Chessboard
Chessboard Multiplication
Chessboard Number
Chifu-Chemulpo
Chinese Checkers
Chinese Jigsaw
Chinese Rings
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Christians and Turks
Chromatic Chessboard
Chromatic Number
Chromatic Square
Chuquet's Deniers
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Cipher
Ciphering
Circle
Circle Squaring
Circuit
Circular Differentiation
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Circus
Clock
Close-Packing
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Coin
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Collatz Algorithm
Columbian Number
Column
Color
Colored Cube
Colored Hats
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Colors
Combination
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Combinatorial Lattice
Combinatorial Recreation
Common Difference
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Complementary Densities
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Complementary Magic Lattice
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Composite Number
Computer
Comstock Formula
Concentric Magic Square
Condition
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Construction
Contack
Continental Board
Contraction
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Convict Man
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Conway Kite
Cooked Recreation
Coprime
Correlative Figure
Correspondent Element
Counting
Course
Course Square
Cow-boys
Cow Knot
Crested Number
Cross
Cross-Cap
Cross-Number Puzzle
Cross-Pegs
Crossed Magic Square
Crossing (1)
Crossing (2)
Crossroad
Cryptarithm
Cryptarithmetic
Cryptarithmic Recreation
Cryptogram
Cryptography
Cube
Cube Duplication
Cubic Number
Cuboctahedron
Cubosquare Identity
Curious Magic Square
Curious Number
Curry Square
Curry Rectangle
Curry Triangle
Curve
Curvilinear Hexagon
Curvilinear Lattice
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Curvilinear Triangle
Cutting-out
Cycle
Cyclic Number
Cyclic Path
Cylinder
Cylinder's Principle