beating for the first time the famous 34-year-old
record done by hand by Charles-Henri Bruneau,
170 moves
published by Science & Vie in 1976
greatly improving
the results obtained by computer, the previous 5T computing record being of "only"
146 moves, as written below
August 21, 82
moves at the 5D game, two more moves than the previous record
of Tristan Cazenave obtained in 2008
From Haruhiko Akiyama:
February 16, 146
moves at the 5T game, one more move than his previous computing
record. This result, which was obtained the day after my previous
update, became the 5T computing record for 6 months... before
being superseded by Rosin's results of August
Publication with Yoshiyuki Kotani
of a paper in Japanese on his grid of
145 moves
on
old 5T grids received by Science & Vie in 1970's,
succeeding to get 168 moves from the grid of 164 moves sent by Joseph
Martin in 1975
Pekka Karjalainen proposes a proof
of an upper bound of 138 moves at the
5D game, three fewer moves than the Demaine-Demaine-Langerman-Langerman upper bound
new 1.50 version of Pentasol for Windows,
by Tomas Jansson and Andreas Björnstad. Our
5T records webpage provides
Pentasol files, look at the
icons
of the Rosin, Bruneau and Hakiyama grids
(on
this image, Pentasol 1.50 after loading Rosin's grid, new 5T record of 172
moves)
new Java app by Daniel Tomasiewicz,
playing at 5T, 5D, 4T and 4D games from any web browser
Pascal (old) source code for Macintosh
by Peter Lewis, inspired by a Morpion Solitaire source code initially
written by Henri Lamiraux, now one of the Vice-Presidents of
Apple, Cupertino.