Patent ID: 6357747
Filing Date: 2002-03-19
Classification: A63F

Abstract:
An eighteen-piece pro-tangram tiling game primarily comprising a board with a face, and eighteen pieces of puzzles constituted by three or four isosceles right triangles, whereinsaid face on said board is a square that the length of each side thereof is 6 times of that of one side of said isosceles right triangles so as to accommodate said eighteen pieces of puzzles or eighteen pieces plus any one piece formed by four said isosceles right triangles; said eighteen pieces of puzzles are described and noted as following: A-shaped piece is made of three isosceles right triangles and looks like a square with a triangle above; B-shaped piece is made of three isosceles right triangles and looks like a square cutting an isosceles right triangle off; C-shaped piece is made of three isosceles right triangles and looks like a parallelogram with a triangle thereunder; D-shaped piece is made of three isosceles right triangles and looks like a trapezoid; F-shaped piece is made of four isosceles right triangles and looks like a big triangle with a small square underneath; G-shaped piece is made of four isosceles right triangles and looks like a big triangle with a small parallelogram; H-shaped piece is made of four isosceles right triangles that form a rectangle; I-shaped piece is made of four isosceles right triangles that form a thin parallelogram; J-shaped piece is made of four isosceles right triangles and looks like a high boot; K-shaped piece is made of four isosceles right triangles and looks like a chukka boot; M-shaped piece is made of four isosceles right triangles that form a trapezoid; Q-shaped piece is made of four isosceles right triangles and looks like square with a parallelogram underneath; R-shaped piece is made of four isosceles triangles and looks like a wide arrow; S-shaped piece is made of four isosceles right triangles and looks like a rotor; V-shaped piece is made of four isosceles right triangles and looks like a medal; W-shaped piece is made of four isosceles right triangles that form a big isosceles right triangle; X-shaped piece is made of four isosceles right triangles that form a big square; Z-shaped piece is made of four isosceles right triangles that form a big parallelogram.