Archive for the ‘Other Number Placement’ Category:

Japanese Sums by Serkan Yürekli

Japanese Sums by Serkan Yürekli

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Double Clues

Author/Opus: This is the 335th puzzle from our managing editor Serkan Yürekli.

Rules: Place the digits 1-6 (1-9 for the example) in some of the cells, so that no digit is repeated in any row or column. Numbers on the outside of the grid indicate the sums of adjacent digit groups in that row or column, in order. Each sum is separated by at least one unused cell.

Japanese Sums Example

Difficulty: 3 stars

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

Solution: PDF; a solution video is also available here.

Note: Follow this link for other less common Number Placement puzzles.

Smashed Sums by Murat Can Tonta

Smashed Sums by Murat Can Tonta

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Doppel

Author/Opus: This is the 202nd puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Fill each row and column of the grid with the digits 1 to 5 and two blackened cells. Numbers outside the grid indicate the sum of the digits between the two blackened cells in that row or column. Blackened cells are allowed to touch. Or see here.

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 2:45, Master = 3:30, Expert = 7:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for other less common Number Placement puzzles.

Smashed Sums by Thomas Snyder

Smashed Sums by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: For 08/03/21

Author/Opus: This is the 388th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Fill each row and column of the grid with the digits 1 to 4 and two blackened cells. Numbers outside the grid indicate the sum of the digits between the two blackened cells in that row or column. Blackened cells are allowed to touch. Or see here.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:00, Expert = 6:00

Solution: PDF; a solution video is also available here.

Note: Follow this link for other less common Number Placement puzzles.

Smashed Sums by Ashish Kumar

Smashed Sums by Ashish Kumar

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Series

Author/Opus: This is the 74th puzzle from our contributing puzzlemaster Ashish Kumar.

Rules: Fill each row and column of the grid with the digits 1 to 4 and two blackened cells. Numbers outside the grid indicate the sum of the digits between the two blackened cells in that row or column. Blackened cells are allowed to touch. Or see here.

Difficulty: 1.5 stars

Time Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30

Solution: PDF; a solution video is also available here.

Note: Follow this link for other less common Number Placement puzzles.

Triplets by Palmer Mebane

This week we are sharing easy sample puzzles from our ebook The Puzzlemasters’ Workshop which showcases six authors exploring new puzzle styles or variations with 8-10 challenges in each section. Today’s post is Triplets.

Triplets by Palmer Mebane

PDF

Theme: Clue Symmetry and Logic

Background: An original number placement puzzle created by Palmer Mebane.

Rules: Fill each cell with a number so that all 27 three-digit numbers with digits 1, 2, or 3 are used exactly once. For each pair of cells sharing a side, the two numbers in those cells must have equal digits in exactly two of the three positions (ones, tens, or hundreds).

Example by Palmer Mebane:

Triplets by Palmer Mebane

(No official times or solution entry for this week; just click “SOLVE?” when finished.)

Solution: Last page of PDF

Note: More Triplets puzzles can be found in The Puzzlemasters’ Workshop.

Smashed Sums by Michael Tang

Smashed Sums by Michael Tang

PDF

Theme: Binary

Author/Opus: This is the 1st puzzle from guest contributor Michael Tang. You can find more puzzles from Michael on the blog mstang’s puzzles.

Rules: Fill each row and column of the grid with the digits 1 to 5 and two blackened cells. Numbers outside the grid indicate the sum of the digits between the two blackened cells in that row or column. Blackened cells are allowed to touch. Or see here.

Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 7th row from left to right. Use an X (capital letter) for each blackened square.

Time Standards (highlight to view): Grandmaster = 2:15, Master = 3:00, Expert = 6:00

Solution: PDF

Note: Follow this link for other less common Number Placement puzzles.

Japanese Sums by Serkan Yürekli

Japanese Sums by Serkan Yürekli

PDF

Theme: All Clues are Different Clues (for Randy Rogers)

Author/Opus: This is the 162nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place the digits 1-7 (1-9 for the example) in some of the cells, so that no digit is repeated in any row or column. Numbers on the outside of the grid indicate the sums of adjacent digit groups in that row or column, in order. Each sum is separated by at least one unused cell. A ? can represent any sum 1 or larger.

Japanese Sums Example

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 3rd row from left to right. Use a capital X for empty cells.

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:30, Expert = 11:00

Solution: PDF

Note: Follow this link for other less common Number Placement puzzles.