Difference between revisions of "Half Dominoes"

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[[File:Half Dominoes.png|thumb|center|200px|Usual set of half dominoes]]
 
[[File:Half Dominoes.png|thumb|center|200px|Usual set of half dominoes]]
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===Rule variations===
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*Half Dominoes on [[irregular grids]] uses different set of half dominoes. The example below is a set of triangular half dominoes used in [[WPC 2018]].
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[[File:Triangular Half Dominoes.png|thumb|center|300px|Triangular version]]
   
 
==History of the puzzle==
 
==History of the puzzle==

Revision as of 08:08, 5 January 2021

Rules

Half Dominoes Example.png Half Dominoes Example Solution.png

Place the nine half dominoes into the grid, without rotating or reflecting them. Numbers indicate how many dots are there in the given row, column or diagonal.

(Rules and example from WPC 2011 IB)

Nine half dominoes are usually one of the following patterns of pips. (Taken from Ulrich Voigt's Half Dominoes puzzle[1])

Usual set of half dominoes

Rule variations

  • Half Dominoes on irregular grids uses different set of half dominoes. The example below is a set of triangular half dominoes used in WPC 2018.
Triangular version

History of the puzzle

Appeared on WPC 1999/Part 5, an "innovative" round. The author of the puzzle is unknown.

Appearances in the past WPCs

References