Logic Masters Deutschland e.V.

Complex Alignments Verification Exercise

Today I am happy to share a small yet not so easy Cave puzzle :-)
I hope you will enjoy and I would be really grateful for all the comments and ratings.

Normal sudoku rules apply.

Cave: Color some cells cave so that all cave cells form one orthogonally connected area and no 2x2 region is entirely cave. Remaining cells form rock walls and are orthogonally connected to the edge of the grid. Within each orthogonally connected group of wall cells, digits cannot repeat and one of them must represent its size.

Cave Clues: A blue circle is always cave and its digit counts how many cave cells it "sees" in the row and column combined, including itself. Wall cells and grid edges block vision.

Wall Clues: A green square is always wall and its digit counts how many wall cells it "sees" in the row and column combined, including itself. Cave cells and grid edges block vision.

SudokuPad Link

If you liked this puzzle, I recommend trying out my other puzzles:

The Erica Series:
★☆☆☆☆: 1, 2, 4, 5, 6, 12, 15, 17, 23, 26, 27, 31, 32, 46, 47
★★☆☆☆: 3, 7, 8, 10, 11, 13, 14, 16, 18, 20, 24, 25, 29, 30, 34, 35, 38, 40, 42, 45
★★★☆☆: 9, 19, 21, 22, 28, 33, 37, 38, 41, 44, 45, 48, 51
★★★★☆: 36, 39, 43, 50, 52
★★★★★: 49

German Sums Series:
★★☆☆☆: 1, 3
★★★☆☆: 2, 4, 5, 6

Shading/Yin-Yang:
★★☆☆☆: Pretty Odd Shaded Area
★★★☆☆: (+5)-Yang, Negative 8 YY
★★★★☆: Aim High! (YY)
★★★★★: Why-Why?, Happ(Y) Birthda(Y), ChinStrap!, Growing YY in the Fog Puzzle Pack

Chaos Construction:
★★★☆☆: Christmas Chaos, German Sums 6, It's a Six out of Seven
★★★★★: Heyawake Sudoku, Top Right Boi, Erica 49

Modifiers:
★☆☆☆☆: Borrower
★★★☆☆: Modified Flat Mates, Neighbourhood Watch
★★★★★: Mad Delirium Puzzle: Remarkably Beyond Crazy [16x16], Top Right Boi [CC], There's Strength in Numbers

Fog of War:
★☆☆☆☆: Erica 12, Erica 17
★★☆☆☆: It's What You Do in the Dark That Puts You in the Light, Find It All, What the Fog?, Erica 20, Erica 29
★★★☆☆: Broken Flashlight in the Dark

Pencil Puzzle/Sudoku Hybrid:
★★☆☆☆: Masyu (Short) Sudoku, Heyawake Sudoku (Given Regions), Way Too Hot, Are You? [Hotaru Beam], Hey, What's Up? [Heyawake]
★★★☆☆: Tetromino Sudoku
★★★★☆: Made in the Shade (Heyawake CC)
★★★★★: Heyawake Sudoku

Pairometers:
★★☆☆☆: Pairometers (6x6 Pack 1), Pairometers
★★★☆☆: Pairometers (6x6 Pack 2), Pairometers (6x6 Pack 3)

Various Puzzles:
★☆☆☆☆: Blown Fuses in Electrical Installation, Let Me Introduce Myself, French Wrench, GAS Regional Constraints, Quadsumes, Snack Latin Arrows, Sarah
★★☆☆☆: Symmetrical Fan, Night Club, Important Hour on the Clock, What Was the Sum Again?, Disgroup Joints, 10-Arrows, Antiking Dutch Skyscrapers, (Not so) Little Killers, Indexing Sword, Larna's HoneyMoon, Ascending Sums
★★★☆☆: Cops & Robbers, Positive Symmetry, Doppelgänger Killer 1-25, Region Whisper Line
★★★★☆: Liars. Liars Everywhere., Sandwiched XV Squishmates, Fireworks 2025, (Yin)German Pairrows, Little Galaxy, 2x Solution, Hit Me Baby One More Time
★★★★★: Any NEWS?, Potentially Pointer, Possibly Parity Party