О количестве Магических Квадратов 6-го порядка 2
B6 (NEW) was calculated during more than one year and finally presented in May 2024 by Hidetoshi Mino (Japan). See magicsquare6.net (external link).
The first attempt was finished in July 2023. This enumeration made use of about 80,000 hours of Nvidia GeForce RTX-4090 GPUs and used about six months of calendar time.
Unfortunately a few hardware errors happened. It took several months to do the calculation again and correct the errors.
Hidetoshi's method first searches semi-magic order-6 squares and then checks how many magic squares can be derived. In the second attempt also the semi-magic squares were counted. In this way A6 could be confirmed.
The result is consistent with stochastic estimates previously done by Klaus Pinn and Christian Wieczerkowski (May 1998) and by me (March 2002), see magic 6x6-squares.
We can be very sure that B6 was finally enumerated correctly.
И оно равно 17 753 889 197 660 635 632 . Оно рассчитано и проверено большой группой математиков по быстрым программам примерно похожим на предложенные мной. О чем сообщил с гордостью мне Мой Симбиоз-Интеллект!
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