Changes in Version 45

Substantial changes have been made in this version. The previous version of the tree search system was found to have several faults, so this has been re-written. The new logic should ensure that the previous faults cannot occur. As always, user feedback would be welcome.

The book by David Wade and myself, see link from Springer, has now been published. This provides additional information and explanation about this web site. A list is available of all the 177 tiling patterns from this site in the book.

The next release of this web site will remove some searching methods in favour of a simple multi-choice interface. One purpose of this change is to avoid the use of SQL by the Internet server.

Pattern additions

The main addition are patterns collected by Peter Cromwell which are early and from Azerbaijan.

A selection of some of them are: