PTHG21 Challenge

In this document we introduce the PTHG21 Challenge, a series of constraint acquisition problems. We describe the organization of the challenge, the format of the data provided, and the result format that should be used. The required data are in the included zip file. Initial results of the challenge will be presented at the "Progress Towards the Holy Grail" workshop at the CP 2021 conference on October 2021.本文介绍PTHG21挑战赛（PTHG21 Challenge），该赛事包含一系列约束获取问题。文中将阐述该挑战赛的赛事组织规则、所提供数据集的格式以及合规的结果提交格式。所需数据集已包含在附带的ZIP压缩文件中。本次挑战赛的初步成果，将于2021年10月举办的CP 2021国际会议旗下"迈向圣杯之路"（Progress Towards the Holy Grail）专题研讨会中展示。