This genre surfaced again in 2015, with the publication of Toketa vol.3 (previously incorrectly listed as the source).
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arrow-yajilin-given
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shade-no-number,arrow-yajilin-given
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Acknowledgements and Changes
2023-01-25 Thanks Lennard Sprong (X_Sheep) for suggesting Sunglasses!
2024-08-10 Many thanks to Lennard Sprong (X_Sheep) for making the rule panels (adapting a puzzle by カルコゲン (Calcogen)) and feedback!
2024-08-10 Thanks to PinkHoodie for sending a good unit test with a missing case (now covered by the new shade-no-number global variant) and 4(!) rollout puzzles!
2024-08-11 Another excellent unit test by PinkHoodie revealed a missing constraint, now added; plus 2 more puzzles were included, with inside numbers
2024-09-27 The authorship and year of this genre was updated, thanks to Martin Ender (Menderbug), who also found an alias.
2024-10-29 The first source for this genre was was kindly provided by Takeya Saikachi, pushing its origins back to 2005.
2025-01-03 Outside arrows in Sunglasses are no longer necessary, while inside arrows can now be added via variant arrows-yajilin-given. Note that without an arrow, all directions are now considered.
2025-03-29 puzzletters PinkHoodie fashioned 1 Sunglasses (classic) puzzle, inspired by the recent Megane rollout - thank you!
2025-03-30 puzzletters PinkHoodie fashioned 1 Sunglasses (classic) puzzle - hat tip!
2025-04-04 puzzletters Anurag Sahay fashioned 1 Sunglasses (classic) puzzle - appreciated!