- Added solutions by W. Luis Mochan.
- Added solutions by Peter Campbell Smith.
- Added solutions by Duncan C. White.
- Added solutions by Luca Ferrari.
- Added solutions by Dave Jacoby.
- Added solutions by David Ferrone.
- Added solutions by Thomas Kohler.
- Added solutions by Mariano Spadaccini.
- Added solutions by Carlos Oliveira.
- Added solutions by Roger Bell_West.
- Added solutions by Chicagoist.
- Added solutions by Robbie Hatley.
- Added solutions by Jorg Sommrey.
- Added solutions by E. Choroba.
- Added solutions by Kjetil Skotheim.
- Added solutions by Arne Sommer.
- Added solutions by Pip Stuart.
- Added solutions by Robert Ransbottom.
- Added solutions by Athanasius.
- Added solutions by James Smith.
- Added solutions by Flavio Poletti.
- Added solutions by Cheok-Yin Fung.
- Added solutions by Solathian.
- Added solutions by Jan Krnavek.
- Added solutions by Eric Cheung.
- Added solutions by Ulrich Reike.
- Added solutions by Robert DiCicco.