Call for Participation

Twenty-Ninth Conference on Principles and Practice of Constraint Programming (CP 2023) August 27-31, 2023, Toronto, Canada.

CP is the premier international event for presenting research in all aspects of computing with constraints, including, but not restricted to: theory, algorithms, environments, languages, models, systems, and applications. CP 2023 will be held in-person in Toronto at the University of Toronto St. George campus (Downtown), August 27-31, 2023.

The CP 2023 program will include presentations of high-quality scientific papers on constraints technology. In addition to the main conference program, CP 2023 will feature 4 specialised tracks covering important topics in Constraints:

  • Applications
  • CP and Machine Learning
  • CP and Operations Research
  • Trustworthy Decision-Making

Preliminary Schedule

You can find a detailed preliminary schedule here:

Sunday 27th August: Workshops, Doctoral Program, Doctoral Program dinner.
Monday 28th August: Opening, invited talk, tutorial, regular sessions, welcome reception.
Tuesday 29th August: Invited talk, tutorial, regular sessions, SPC dinner.
Wednesday 30th August: Invited talk, competition results, awards, DEI event, regular sessions, ACP general assembly, banquet.
Thursday 31th August: Invited talk, best paper awards, regular sessions.

For more information, please check out the list of accepted papers and a more detailed preliminary program.
Please also check out website for more information on the workshop, tutorials and the CP Doctoral Program.



  • Explainable Constraint Solving - A Hands-On Tutorial by Ignace Bleukx, Dimos Tsouros and Tias Guns.
  • Machine Learning for Solvers by Vijay Ganesh

Invited Talks

  • Maria Garcia de la Banda (Monash University) Beyond optimal solutions for real-world problems
  • Jimmy Lee (Chinese University of Hong Kong) A Tale of Two Cities: Teaching CP with Story-Telling
  • Laurent Perron (Google, France) The CP-SAT-LP solver
  • Thomas Schiex (Universite Fédérale de Toulouse, ANITI, INRAE) Coupling CP with Deep Learning for Molecular Design and SARS-CoV2 variants exploration
  • Petr Vilím (ScheduleOpt) CP Solver Design for Maximum CPU Utilization


The registration costs are as follows:

  • Workshop only (August 27th, Sunday): $350 CAD
  • Conference and Workshop, Student: $750 CAD
  • Conference and Workshop, Regular: $1,250 CAD
  • Conference and Workshop, Industry: $1,600 CAD

Please go to our registration page to register for CP 2023.


CP 2023 appreciates the generous support of our sponsors.

Gold sponsors:

Other sponsors:

Organizing Committee

Conference Chair

  • Andre Augusto Cire (University of Toronto)

Program Chair

  • Roland Yap (National University of Singapore)

Local Chair

  • Eldan Cohen (University of Toronto)

Workshop Chair

  • Lars Kotthoff (University of Wyoming)

Tutorials Chair

  • Emir Demirović (TU Delft)

Doctoral Program Chair

  • Xavier Gillard (Université catholique de Louvain)

Publicity & Website Chair

  • Anna Latour (National University of Singapore)

DEI Chairs

  • Maria Andreina Francisco Rodriguez (Uppsala University)
  • Andrea Rendl (Satalia)

Sponsorship Chair

  • Arvind Raghunathan (Mitsubishi Electric Research Laboratories)

Special Track Chairs

  • CP Applications Track: Helmut Simonis (Insight SFI Research Centre for Data Analytics)
  • CP & Machine Learning Track: Tias Guns (KU Leuven)
  • CP & Operations Research Track: Gilles Pesant (Polytechnique Montréal)
  • CP & Trustworthy Decision Making Track: Peter Stuckey (Monash University)

Senior Program Committee and Program Committee

For regular updates and the latest news, follow us on Twitter @cp_conf and @cp2023conf, or on Mastodon at