CTK Math Games for Kids

Terms of use

The CTK Math Games for Kids and related web sites are offered to further mathematics education and for personal enjoyment. Fair use is encouraged. The sites are available publicly, but are not in public domain. All available material is a copyrighted property of Dr. Alexander Bogomolny and must be treated as such.

  • Copyright. Any use, whether in print or electronic format, beyond that specified in the fair use guidelines issued by the U.S. Copyright Office, must have explicit permission and/or licensing from CTK Software, Inc.

  • Bulk download. Material at our sites are not to be downloaded for offline usage; no material may be installed on any server, save cut-the-knot.com or .org, unless so licensed. Unauthorized attempts at bulk downloading of material will be met by blocking of violators together with the subnets from which they originate.

  • Links and Framing. Links may be made to the Interactive Mathematic Miscellany and Puzzles pages, i.e. HTML files, as long as the source of the contents remains unumbiguous. In particular, the Interactive Mathematic Miscellany and Puzzles's content may not be framed unless it is made clear that the content is hosted by the Interactive Mathematic Miscellany and Puzzles and the URLs of the framed Interactive Mathematic Miscellany and Puzzles pages are saliently displayed. Please make links to cut-the-knot.org and not to cut-the-knot.com site.

  • Permission to link. Subject to the above, permission is only granted to link to specific pages, not to individual graphics, movies, or Java applets. Hot links to graphics, applets or other non-HTML files are absolutely forbidden.

  • Scholarly papers. Writers of term papers, theses, dissertations, and other scholarly papers are permitted the fair use of limited excerpts from the Interactive Mathematic Miscellany and Puzzles web site and publications, with appropriate citations.

  • Limitation of Damages. UNDER NO CIRCUMSTANCES, INCLUDING NEGLIGENCE, SHALL DR. ALEXANDER BOGOMOLNY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES THAT MAY RESULT FROM THE USE OR INABILITY TO USE THE SITE, INCLUDING WITHOUT LIMITATION USE OF OR RELIANCE ON INFORMATION AVAILABLE ON THE INTERACTIVE MATHEMATICS MISCELLANY AND PUZZLES WEB SITE, INTERRUPTIONS, ERRORS, DEFECTS, MISTAKES, OMISSIONS, DELETIONS OF FILES, DELAYS IN OPERATION OR TRANSMISSION, NONDELIVERY OF INFORMATION, DISCLOSURE OF COMMUNICATIONS, OR ANY OTHER FAILURE OF PERFORMANCE.

  • Release and Indemnity. YOU HEREBY RELEASE AND WAIVE ANY AND ALL CLAIMS AND/OR LIABILITY AGAINST DR. ALEXANDER BOGOMOLNY ARISING FROM OR IN CONNECTION WITH YOUR USE OF THE SITE. YOU ALSO AGREE TO DEFEND, INDEMNIFY AND HOLD HARMLESS, DR. ALEXANDER BOGOMOLNY, FROM AND AGAINST, ANY AND ALL CLAIMS OR LIABILITY, INCLUDING COSTS AND ATTORNEYS FEES, ARISING FROM OR IN CONNECTION WITH YOUR USE OF THE SITE OR FAILURE TO ABIDE BY APPLICABLE LAW.

  • Modifications. These rules may be modified by CTK Software, Inc. from time to time and such modifications will be binding on you when published on the Interactive Mathematic Miscellany and Puzzles web site.


Copyright © 1996-2009 Alexander Bogomolny