From unification to constraints -- CS-Prolog: A generalized unification based constraint solver -- Update propagation network — A framework for constraint programming -- Mendels: Concurrent program synthesis system using temporal logic -- Analogical program synthesis from program components -- Deriving a compilation method for parallel logic languages -- The art of building a parallel logic programming system or from zero to full GHC in ten pages -- of a package system into Prolog -- KPR: A logic programming language-oriented parallel machine -- A preliminary evaluation of a parallel inference machine for stream parallel languages -- Managing search in parallel logic programming -- Inductive inference of regular languages based on model inference -- Polymorphic type inference in Prolog by abstract interpretation -- Proving partial correctness of guarded horn clauses programs -- Knowledge representation and inference based on first-order modal logic -- Manipulation of embedded context using the multiple world mechanism -- Generating natural language responses appropriate to conversational situations - in the case of Japanese - -- An approach to speeding up the Prolog-based inference engine KORE/IE -- Test generation for large-scale combinational circuits by using Prolog -- Concurrent execution of Prolog transaction.

This volume contains most of the papers presented at the 6th Logic Programming Conference held in Tokyo, June 22-24, 1987. It is the successor of Lecture Notes in Computer Science volumes 221 and 264. The contents cover foundations, programming, architecture and applications. Topics of particular interest are constraint logic programming and parallelism. The effort to apply logic programming to large-scale realistic problems is another important subject of these proceedings.