Hidden Little Killer Sudoku

(Published on 15. September 2020, 00:34 by cdwg2000)

Rules: Apply Classic Sudoku rules. The arrow means that the number in the grid with arrow is equal to the sum of the all numbers are pointed by the arrow, The numbers that make up the sum of the arrows can be repeated,all diagonal arrows are marked.

Rule description, see figure below.

As shown in the figure: R2C3=R1C4, the R2C3 cell must be marked with the upper right arrow; R5C2=R6C3+R7C4+R8C5+R9C6, then the R5C2 cell must be marked with the lower right arrow, and at the same time: R7C4=R8C5+R9C6, R7C4 cells must also Mark the lower right arrow; R1C7=R2C6+R3C5+R4C4. Since R4C4 is not the last cell of the diagonal line of the lower left direction of R1C7, cell R1C7 does not need to mark the lower left arrow.

The author of the puzzle is my friend 罗思远(Luo Si Yuan) from China.I hope you like it and would appreciate any form of feedback.

This question is from the 59th match of the China Sudoku Online Championship(CSOC), http://www.sudokufans.org.cn/pk5/index.php?page=3.

Penpa link

Solution code: Row 6, followed by Row 9.

Last changed on on 29. July 2021, 16:41

Solved by Greg, SudokuExplorer, Ours brun, Jesper, zhergan, KlausRG, Julianl, skywalker, H1324851344, SKORP17, NikolaZ, Imperial Marcher, zorant, bob, Uhu, Thomster, misko, Mody, Ximota

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Comments

on 15. September 2020, 13:32 by zhergan
Great puzzle. Also a tricky one. At least for me :)

on 15. September 2020, 02:18 by SudokuExplorer
Very fun puzzle! Thanks Luo Si Yuan again, for this lovely creation.

on 15. September 2020, 01:09 by Greg
Excellent puzzle.

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Difficulty:
Rating:	82 %
Solved:	19 times
Observed:	11 times
ID:	0004BS

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