Problem set of IChTo-2024 (Guadalajara, Mexico) Problems of the past Tounaments Problems of IChTo-2023 (Tbilisi, Georgia) Problems of IChTo-2022 (Budapest, Hungary) Problems of IChTo-2020/2021 (online) Problems of IChTo-2019 Problems of IChTo-2018 Problems of IChTo-2017
