• Competition Registration
  • All participating teams need to register, one registration per team.
  • Click to register on the Botzone first. Registration is at the top right of the homepage.
  • Click to register in the competition group.
• Conference Registration
  • The participants who advance to the finals will need to register for IJCAI-PRICAI 2020.
  • Each person can be a member of at most one team.
• Click here to view the competition group page.

• Download sample code and submit, you're done!

• Learn Mahjong Competition Rules from our wiki
• Download our judge program and Mahjong Helper to learn MCR in details
• (Optional) We provide human player matches datasets: link, password: rm79 (P.S. if you are confused with the dataset, please contact us (botzone@126.com) with the confusing match's data)
• Submit your AI and compete with each other!

• Registration Deadline: October 31th, 2020 (GMT+8)
• Round 0 (Simulation Round): ~ October 31th, 2020 (GMT+8)
  • Simulation contests are planned every week, for participants to get familiar with the platform, game rules and contest rules
  • Scores in Round 0 will not be counted
• Round 1 (Tournament Round): November 1st, 2020 (GMT+8)
  • Swiss-system tournament and Duplicate Format will be used
  • About three rounds will be held in this round, score in each round will be counted as 20%, 30% and 50% to the Round 1 score
  • Three rounds:
    • November 1st, 2020 (GMT+8)
    • November 8th, 2020 (GMT+8)
    • November 15th, 2020 (GMT+8)
  • Top 16 of the Round 1 will proceed to Round 2
  • The pesudo code of contest system is above.
  • Result of Round 1 will be announced on November 21st, 2020 (GMT+8)
• Round 2 (Final Round): Janurary 1st, 2021 (GMT+8)
  • Swiss-system tournament and Duplicate Format
  • Final Round consists of two stages.
    • Stage 1: 96 rounds of Swiss-system with the same rules to Tournament Round.
    • Stage 2: Top 4 in Stage 1 will have 128 rounds of matches with Duplicate Format.
  • Final result will be announced on IJCAI-PRICAI 2020 session
  • There won't be modification window for bots between the two stages.
• Note: Click here to get the Duplicate Format rules.

• Paper Submission Deadline: December 15th, 2020 (GMT+8)
• Acceptance Notification: Janurary 1st, 2021 (GMT+8)
• Camera Ready Deadline: Janurary 6th, 2021 (GMT+8)
• Symposium: During IJCAI-PRICAI 2020 session
• Submission:
  • Papers should be limited to 6 pages plus at most one additional page for references. Papers should include author names and affiliations.
  • Submissions should be formatted in PDF according to IJCAI guidelines and submitted by email to mahjongcompetition@pku.edu.cn.
  • Formatting guidelines and electronic templates are available on the IJCAI-PRICAI 2020 website.
• Proceedings:
  • Accepted papers will be published on the botzone.org website. Authors will retain copyright and papers can be submitted elsewhere.
• Symposium
  • Accepted papers will be presented during IJCAI 2020 Mahjong AI competition. At least one author of each accepted paper must register for the Mahjong competition and present the paper at the symposium.
  • The top 16 teams who advance the finals will be given the opportunity to briefly introduce their team, their agent, and the methods and strategies used. Posters are also be encouraged.

Our prior work on Mahjong AI and the platform Botzone:

• Zhou, Haoyu, et al. "Botzone: an online multi-agent competitive platform for AI education." Proceedings of the 23rd Annual ACM Conference on Innovation and Technology in Computer Science Education. 2018.
• Zhou, Haoyu, et al. "Botzone: a competitive and interactive platform for game ai education." Proceedings of the ACM Turing 50th Celebration Conference-China. 2017.
• Zhang, Haifeng, et al. "Botzone: A game playing system for artificial intelligence education." Proceedings of the International Conference on Frontiers in Education: Computer Science and Computer Engineering (FECS). The Steering Committee of The World Congress in Computer Science, Computer Engineering and Applied Computing (WorldComp), 2012.
• Li, Wenxin, et al. "Teaching AI Algorithms with Games Including Mahjong and FightTheLandlord on the Botzone Online Platform." Proceedings of the ACM Conference on Global Computing Education. 2019.

• Wenxin Li (Co-chair) lwx@pku.edu.cn
• Haifeng Zhang (Co-chair) haifeng.zhang@pku.edu.cn
• Yushan Zhou botzone@126.com

AI Lab, Institute of Network Computing and Information Systems, Department of Computer Science and Technology, School of Electronics Engineering and Computer Science, Peking University, is led by Professor Wenxin Li, AI Lab is dedicated to artificial intelligence in games, as well as computer education, biometric recognition and related fields.

WEIZHIYU (Beijing) Technology Co., Ltd. is a company focusing on artificial intelligence and application of games. With advanced game AI technology and leading industrial share, WEIZHIYU has long-term cooperation with many academic institutes, including Tsinghua University, Peking University, Chinese Academy of Science and Beijing Information Science & Technology University, for cutting-edge artificial intelligence research. The company has a technical team with over 30 people and the core members graduate from famous universities like Tsinghua University and Peking University.