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Gurami

is a new combinatorial puzzle. Although on first glance Gurami looks like Sudoku with triangles instead of squares, it offers a whole new riddle experience.

Prof. Dr. Hans-Friedrich Bauch has been analyzing mathematical triangle and hexagon puzzles since 1989. Dr. Klaus-Peter Rudolph develops board games since 2007. At the beginning of this book they outline construction, analogies and differences between different number-placement puzzles. The research on these shape puzzles by Hans-Friedrich Bauch inspired Klaus-Peter Rudolph to create the Gurami puzzles.

This book contains 60 brainteasers and a few introductory hints on how to take advantage of the unique triangle structure of Gurami. It's in German language and can be ordered online (German site)

Rules:

The numbers from the table have to be put into the triangles in accordance with the following rules:

  1. In the white triangles every number from 1 to 8 appears exactly once.
     
  2. In the gray triangles every number from 1 to 8 appears exactly once.
     
  3. Every horizontal, upward and downward stripe fulfills the following condition:

    The sum of the numbers in the gray triangles equals
    the sum of the numbers in the white triangles.
horizontal stripes                   upward stripes                   downward stripes      
 
 

  |Puzzle 1|   |Puzzle 2|

First select a free white or gray triangle,
then select a number from the row of same color:

 

This was easy.

Following puzzles are more difficult, especially the last one
(here is also an equal sum in the central hexagon demanded:
4+3+1+6 = sum of the two gray triangles).

Print out the jpg-files below or download Gurami_5-Aufgaben.pdf (600 kb)
 

Gurami - das neue Zahlenrätsel

Gurami - das neue Zahlenrätsel


Editor of Gurami das neue Zahlenrätsel and responsible for this website:

Bambus SpieleverlagBambus Spieleverlag
Günter Cornett
Kopfstraße 43
12053 Berlin
Germany

VAT: DE 187 441 909

Phone: +49-030-6121884
Fax: +49-030-6121884

email cornett@bambusspiele.de