Divide the grid into a given set of dominoes. Each domino should be used exactly once. The orientation of the letters does not matter. Empty cells are not part of a domino.
(Rules and example (using full set from 0-0 to 3-3) from PGP IB)
- Oriented Dominoes: Present in WPC 2000. Numbers are represented by dots as in classic domino. Orientation of the dots mhas to be taken into account.
- In WPC 2012/Round 1, some numbers were blanked out and solvers had to reconstruct these numbers too.
History of the puzzle
The puzzle was patented in 1893 by Richard Osa (Germany), under the name "Dominosa Omnibus".
First appeared on WPC 2018/Round 5. The puzzle was by František Luskač (Czech Rep).
Divide the grid into triminoes where each trimino represents two overlapping domino tiles. The whole set of domino tiles from the given set has to be used.
(Rules and example (1-1 to 4-4) from WPC 2018 IB)
Appearances in the past WPCs
- WPC 2019/Round 3 (Permaculture hybrid with Slitherlink) by Silke Berendes
- WPC 2019/Round 9 by Ulrich Voigt
- WPC 2018/Round 4 (Hexagonal grid) by František Luskač
- WPC 2018/Round 5 (Condensed Domino, Oriented Domino) by František Luskač
- WPC 2018/Round 6 (Kakuro Domino)
- WPC 2018/Round 10 by Jiří Hrdina
- WPC 2017/Round 12 by Prasanna Seshadri
- WPC 2016/Round 12
- WPC 2016/Round 14
- WPC 2014/Round 1
- WPC 2013/Part 4 (Domino Extra)
- WPC 2013/Part 7
- WPC 2012/Part 1
- WPC 2012/Part 3 (Deficient Dominoes)