The earliest source for this genre is Puzzle Communication Nikoli 62 (1996), under name 八方リンク, invented by となりのトロロ.
Later, in 2010, Jak Marshall independently re-invented this genre, and named it Linesweeper, a name that caught on.
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Random 8
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grandstands-merged
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Acknowledgements and Changes
2024-05-29 Linesweeper 八方リンク released, both as genre and variant.
2024-05-29 Thanks to モノクログリーン for noticing that the ruleset is exactly the same as 八方リンク (1996). Authorship has thus been revised.
2024-05-29 PinkHoodie sent a kiki Linesweeper 八方リンク for the rollout. Thank you!
2024-06-03 Thanks to Mitchell Clarke (DireKrow) and justkirb for noticing a non-uniqueness in the hex puzzle, which was thus reformulated
2024-10-05 puzzletters Random 8 added the missing 7, to obtain a different puzzle with a perfect theme.
2024-10-19 puzzletters PinkHoodie sent 1 puzzle using variant grandstands-merged!