- Added solutions by Ulrich Rieke.
- Added solutions by Robert DiCicco.
- Added solutions by W. Luis Mochan.
- Added solutions by Kjetil Skotheim.
- Added solutions by Humberto Massa.
- Added solutions by Thomas Kohler.
- Added solutions by Packy Anderson.
- Added solutions by rcmlz.
- Added solutions by PokGoPun.
- Added solutions by David Ferrone.
- Added solutions by Mark Anderson.
- Added solutions by Lubos Kolouch.
- Added solutions by E. Choroba.
- Added solutions by Robbie Hatley.
- Added solutions by Peter Meszaros.
- Added solutions by Peter Campbell Smith.
- Added solutions by Dave Jacoby.
- Added solutions by Avery Adams.
- Added solutions by Steven Wilson.
- Added solutions by Ali Moradi.
- Added solutions by Jorg Sommrey.
- Added solutions by Bob Lied.
- Added solutions by Matthew Neleigh.
- Added solutions by Matthias Muth.
- Added solutions by Stephen G. Lynn.
- Added solutions by Bruce Gray.
- Added solutions by Cheok-Yin Fung.
- Added solutions by Jan Krnavek.
- Added solutions by Arne Sommer.
- Added solutions by Athanasius.
- Added solutions by Simon Green.
- Added solutions by Luca Ferrari.
- Added solutions by Solathian.
- Added solutions by BarrOff.
- Added solutions by Robert Ransbottom.