XV Clicks/Broken Abacus (XV 159)
(Published on 19. November 2021, 17:05 by tallcat)
XV Clicks
Normal Sudoku rules apply
XV: Cells separated by an X must sum to 10. Cells separated by a V must sum to 5. Not all X's and V's are given (no negative constraint)
159: Digits in column 1 indicate the column in which the digit 1 appears in that row (e.g. if r4c1 is a 6, r4c6 is a 1). The same applies to columns 5 and 9, with the digits 5 and 9 respectively.
Play online at f-puzzles or CTC
Broken Abacus
Normal Sudoku rules apply
XV: Cells separated by an X must sum to 10. Cells separated by a V must sum to 5. Not all X's and V's are given (no negative constraint)
Broken 159: Shaded red cells in column 1 indicates the position of 1 in the same row (e.g. if R5C1 is a 6, R5C6 is a 1). The same is true of columns 5 and 9, regarding the digits 5 and 9, respectively. These rules apply ONLY to shaded red cells. (e.g. If R1C1 is 4, then R1C4 cannot be 1)
Play online at f-puzzles or CTC
Solution code: XV Clicks Column 7 (Top to bottom) followed by Broken Abacus Column 7 (Top to Bottom). 18 digits, no spaces.
Comments
on 21. November 2021, 23:25 by Chilly
Nice and straightforward solve - really enjoyed both, especially the use of the negative constraint in Broken Abacus
on 21. November 2021, 17:23 by twototenth
Getting two Tallcat puzzles in one presents quite the conundrum: the site will only let me select "very nice" once.
on 21. November 2021, 16:08 by Playmaker6174
Very fun puzzles, I really like the interactions in Broken Abacus one, some unexpected yet beautiful deductions there :)
on 19. November 2021, 19:52 by riffclown
Both Puzzles are great. IMO the Broken 159 is Stellar!! Thank You for setting this.
on 19. November 2021, 17:48 by Cane_Puzzles
Both puzzles are very nice but I was especially surprised that Broken Abacus could have a unique solution with so few XV clues. The broken 159 constraint was used very nicely.
on 19. November 2021, 17:16 by tallcat
Edited Solution Code description.
