Click a thumbnail to see its larger version and description.
Die einfachste elementare Strategie: Mit nur drei Arten von Operationen
This item is no longer in print. Collectors trying to purchase this item will want to check online used book sellers such as this one.
Thank you to the following people for their assistance in helping collect the information on this page: Georges Helm.
This puzzle can be found in collections of these members:
Found a mistake or something missing? Edit it yourself
or contact the moderator