### Sunday Surprise #10 – Christmas Tree LI(gh)TS

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Today’s Surprise originated from an unintended mistake. Despite a puzzle labeled “Star Battle” and a graphic with a “2 star” label at the top, Friday’s puzzle was attempted by first one and then many solvers out of curiosity as a LITS. While I’ve seen a Star Battle that can double as a LITS, this was not originally one of them and it is not a typical property to have.

Undaunted by the challenge, Tapio Saarinen (ArDeeJ) sent along a modification of my puzzle into a LITS. After some tweaks by me, we have a Christmas Tree LITS puzzle with very few changes from the original (see this crude sketch). Enjoy the gift that keeps on giving!

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Christmas Tree LI(gh)TS

Rules: Standard LITS rules.

Or, if you prefer to treat this as a Star Battle for some unknown reason, use these rules: In this variation of Star Battle, place the indicated number of stars in each row, column, and region. Then shade exactly four connected cells (without stars) in each outlined region, to form an L, I, T, or S tetromino, so that the following conditions are true: (1) All shaded cells are connected with each other; (2) No 2×2 group of cells can be entirely shaded black; (3) When two tetrominoes in adjacent regions share an edge, they must not be of the same type (L, I, T, or S), regardless of rotations or reflections.

Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.

Solution: PDF

• hagriddler says:

hilarious how the rules are presented ! LOL

• Jack Bross says:

I’m tempted to make more work for the constructors, here. “Gosh, that was a tough double-back puzzle…”

• Tamz29 says:

Ditto. “This heyawacky seems to have multiple solutions…”

• edderiofer says:

“I think this Country Road puzzle is broken.”

“There aren’t enough clues for this Irregular Number Distribution Sudoku.”

• edderiofer says:

I just tried to solve it as one. Turns out the puzzle can’t be solved as one due to the region containing R1C4, which forces R1C3 to be blank.

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