This Sudoku Is As Good As It Gets

Phistomefel has again created a sublime work of puzzle art with his Cave Sudoku. Play it here:
https://cracking-the-cryptic.web.app/sudoku/Hph4Qn9fB9

Rules: [It is worth taking a quick look at the example solution at the link below as the rules are not too complicated once you "see" an example.]
Normal sudoku rules apply. In addition, some cells must be colored grey so that all grey cells (the "walls") are orthogonally connected to the edge and all other cells form an orthogonally connected area (the "cave"). Each yellow marked cell is inside the cave and its digit indicates how many cave cells can be seen horizontally and vertically before hitting a wall or the edge of the grid. The clue cell itself is counted for this purpose. The digit in some yellow cells has yet to be determined and not every possible clue cell is given. In an orthogonally connected area of grey cells no digits may repeat. 2x2 blocks of either cave or wall are possible.

Example solution (and original post of the puzzle):
https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0003U6

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We have recently RELEASED our second Sudoku Puzzle Hunt. Patrons of the channel can download it at our patreon page (link below).

You can become a patron here:
https://www.patreon.com/crackingthecryptic

The solution video for the hunt is also now available for all $3 patrons and above. Congratulations to the 260+ solvers who have completed the hunt correctly!

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Our Chess Sudoku App has just been updated to include lots of Queen Sudoku puzzles! Do update your app to access these puzzles :)

Our Sandwich Sudoku App has just been updated to allow users to transfer data between different devices! This update is coming later this month for Classic Sudoku, Chess Sudoku and Thermo Sudoku!

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▶ABOUT US◀
Hi! We're Simon Anthony and Mark Goodliffe, two of the UK's most enthusiastic puzzle solvers. We have both represented the UK at the World Sudoku Championships and the World Puzzle Championships. We're also "cryptic crossword" aficionados. Mark is the twelve-time winner of The Times championship and Simon is the former record holder for most consecutive correct solutions to The Listener crossword. We hope we can help your puzzle solving while also introducing you to some of the world's best puzzles.

Thank you for watching!
Simon and Mark

Видео This Sudoku Is As Good As It Gets канала Cracking The Cryptic