BasicKeys.xml

<sequence values="BDIRGYNOKPFCU" origin="Center">
  <all in="DB*" out="*ID" comment="draw a grid"/>
  <one in="D" out="G" limit="1" comment="put an end"/>
  <one comment="put a start far from the end">
    <rule in="D" out="R" limit="1"/>
    <field for="R" from="G" on="RID"/>
  </one>
  <one in="RID" out="*NO" limit="1"/>
  <one temperature="2.0" comment="draw a non-optimal path from start to end">
    <rule in="OID" out="YNO"/>
    <rule in="OIG" out="YNG"/>
    <field for="O" to="G" on="GIDO"/>
  </one>
  <one in="RNY" out="KFR" limit="1"/>
  <markov>
    <one in="UID" out="CCU"/>
    <one in="RID" out="OCU"/>
    <one>
      <rule in="RNY" out="FFR"/>
      <rule in="ONY" out="FPR"/>
      <rule in="RNG" out="FFG"/>
      <rule in="ONG" out="FPG"/>
    </one>
  </markov>
  <all in="CID" out="*CC"/>
  <all in="I" out="B"/>
</sequence>

<!--
Generates a random puzzle with keys and locks on the main path. For a variation that can put locks on any paths see Keys.

Used in SeaVilla.
-->