The New Sudoku Players' Forum

[m_b_metcalf]

Has anyone bothered to read through Elon Musk's AI-generated Grokipedia entry on sudoku? I was struck by the unnecessarily complicated solution path for the sample puzzle. The puzzle has 33 clues, not 28 as stated, and the displayed version is wrong. The solution path uses Nishio and forcing chains (SE 6 and 7) but it can be solved more simply by XY-wings (SE 4.2). I don't have the patience to make any edits, but maybe someone else does. In any case, it's not a very impressive example of AI, especially as the more than 100 websites listed do not include our favourite one!

Regards,

Mike

[Hajime]

No (artificial) intelligence needed.
The displayed puzzle with 33 clues is invalid.
It has two 7's in column 2.
The puzzle as string
.179.36......8....9.....5.7.72.1.43....4.2.7..6437.25.7.1....65....3......56.172.
has indeed one XY-wing needed after basics.