anchor.diff:  
   Planner has several examples. In this manual we explain mainly using the _n_ queens example and cloud balancing example. So it is advisable to read at least those sections.
   
  -The `Competition?` column in the following table identifies an example as being either realistic or unrealistic. A _realistic competition_ is _an official, independent competition_:
  +Some of the examples solve problems that are presented in academic contests. The `Contest` column in the following table lists the contests. It also identifies an example as being either _realistic_ or _unrealistic_ for the putpose of a contest. A _realistic contest_ is _an official, independent contest_:
   
   * that clearly defines a real-word use case.
   * with real-world constraints.
  
positive.code: .Examples Overview
  [cols="1,1a,1a,1a,1a", options="header"]
  |===
  |Example |Domain |Size |Competition? |Special features used
  
  |<<nQueens,N queens>>
  |* 1 entity class
  
negative.code: * that expects reproducible results within a specific time limit on specific hardware.
  * that has had serious participation from the academic and/or enterprise Operations Research community.
  
  Realistic contests provide an objective comparison of Planner with competitive software and academic research.
  
  The source code of all these examples is available in the distribution zip under [path]_examples/sources_
  and also in git under [path]_optaplanner/optaplanner-examples_.
  