TY - GEN A1 - Clausecker, Robert T1 - Notes on the Construction of Pattern Databases N2 - This report aims to explain and extend pattern databases as a tool in finding optimal solutions to combination puzzles. Using sliding tile puzzles as an example, an overview over techniques to construct and use pattern databases is given, analysed, and extended. As novel results, zero aware additive pattern databases and PDB catalogues are introduced. This report originally appeared as a bachelor thesis at Humboldt University of Berlin under the title Notes on the Construction of Tablebases. T3 - ZIB-Report - 17-59 KW - pattern-database 15-puzzle 24-puzzle ida* heuristic-search pdb-catalogue zpdb Y1 - 2017 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/6558 UR - https://nbn-resolving.org/urn:nbn:de:0297-zib-65586 SN - 1438-0064 ER -