The simple book of not-so-simple puzzles [electronic resource] / Serhiy Grabarchuk, Peter Grabarchuk, Serhiy Grabarchuk, Jr.

Quadro block -- Five buttons -- Twenty-four-seven -- Out of the Y -- Broken square -- Why tee tee -- Elliptic proportions -- Netting -- In the right triangle -- Checkered challenge 58 -- Two unicursal bricks -- Profiles : the solids -- The wrench dividing -- In the same plane -- The triangle quest -- A smooth way through the maze -- Elastic trios -- The tube colors -- The air bubble challenge -- Three fragments -- An odd field -- Finding the solution -- Pentatriangles -- The drop -- Triangle & two matchsticks -- Easy L-Packing -- Golden budget -- The shape-color connection -- Separate the shapes -- S-Days and T-Days -- The puzzling cross -- Round-up -- The square-triangle couple -- The die stack -- T-Unicursal -- The square quest -- Signs & symbols -- 1-2-3 transforming puzzle -- The viewpoint -- Play with an erasure -- Trapezoid contours -- Add a row -- The M-shaped count -- No magic -- What dice it matter? -- Hexa differing -- The heart of the match -- DigitCount -- The book staircase -- Two different triangles -- Inside the grid -- Drop & match -- Mag[superscript 2]netic -- The antique ring -- The factory block puzzle -- Puzzle card -- Coin upside-down -- The puzzle infinity -- The caravel -- Twin cubism -- Three L's to a T -- Equal perimeters -- What's there in the square? -- G-Knights exchange -- Rectangle differing -- Four more triangles -- The four snakes puzzle -- Black or white in cube -- Pentomino switch -- The ancient pyramid puzzle -- Broken watch -- Coins apart -- The deer puzzle -- Cheap victory -- Down the street or ... finding the house -- 97 question 5 -- Triangles & digits -- Coin invert -- The legendary town -- Cubism -- The matchstick needle -- Shore connecting -- Cube differing -- The right-angle framework -- The VHS tricky packing -- Coin triangle theorem -- Guess the phone number -- Magnetic tetrahedron -- Tetrapaving -- The yawl -- Stairs in the pyramid -- Cubius -- Penta Duo -- The jigsaw square fusion -- Brick knights' swap -- Solid chain -- The tomahawk -- Delta cube score -- Around the table -- The three I's -- Butterfly differing -- NumCount -- Four matches & Nautilus -- Mag[superscript 3]netic -- Coin upside-down 2 -- The blue tetrahedron puzzle -- Where is the solution? -- Christmas tree.

Also available in print edition.

Mode of access: World Wide Web.