Yajisan Kazusan by Jamie Hargrove

Yajisan Kazusan by Jamie Hargrove

PDF

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

Theme: 2×2 Clue Blocks

Author/Opus: This is the 3rd puzzle from guest contributor Jamie Hargrove.

Rules: Shade some cells black so that all unshaded number and arrow clues indicate the exact count of shaded cells in the given direction. Shaded cells cannot share an edge, and all white cells must remain connected as part of a single contiguous group. It is allowed to shade over some of the numbered cells; a shaded over clue may or may not be true.

Also, see this example:

Yajisan Kazusan by Thomas Snyder

Answer String: For each row from top to bottom, enter the number of shaded cells as a single string. For the example, the answer is “20212”.

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:15, Expert = 10:30

Solution: PDF

Note: Follow this link for other less common Shading puzzles.

  • skynet says:

    Sadisitic puzzle.Too hard

  • egrieg says:

    Agreed. I found this to be too hard to be fun. Maybe if I get more practice with this style it will get better.

  • Andrew Wolf says:

    Solved with bifurcation but still curious about a solving path. Anyone able to share the break-in?

  • Avatar photo drsudoku says:

    Ubj sne qvq lbh trg orsber erfbegvat gb ovshepngvba? Tvira gur ahzore bs fvzvyne pyhrf, lbh pna znex n ybg bs rvgure/be fdhnerf ba rqtrf gung arrq funqvat (sbe vafgnapr nyy bs pbyhzaf 8 naq 9 orybj gur pyhr oybpx, pbyhza 3 nobir gur pyhr oybpx, ebj 6 yrsg bs gur pyhr oybpx. Gur vagrefrpgvba bs gurfr fhpu nf pbyhza 3 naq ebj 6 tvir fbzr fgnegvat cbvagf. Pbaarpgvivgl nobir gur pbyhza 8/9 oybpx vf nabgure vzcbegnag pbafgenvag lbh’yy eha vagb.

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