Archive for the ‘Other Number Placement’ Category:

Japanese Sums by Serkan Yürekli

Japanese Sums by Serkan Yürekli

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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

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

Arithmetic Square by Thomas Snyder

Arithmetic Square by Thomas Snyder

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Theme: Logical

Author/Opus: This is the 273rd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Place each digit from 1 through 9 into the white boxes (a different digit per box) so that the indicated equations or relations are correct when evaluating from left to right or top to bottom (ignore the usual order of operations).

Answer String: Enter the nine digits in the boxes from left to right, starting with the top row, then the middle row, and then the bottom row, as a single string (e.g., “273854169”).

Time Standards (highlight to view): Grandmaster = 1:30, Master = 3:30, Expert = 7:00 (*Estimates from competition scoring, not our usual process)

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

Arithmetic Square by Thomas Snyder

Arithmetic Square by Thomas Snyder

PDF

Theme: Logical

Author/Opus: This is the 272nd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Place each digit from 1 through 9 into the white boxes (a different digit per box) so that the indicated equations or relations are correct when evaluating from left to right or top to bottom (ignore the usual order of operations).

Answer String: Enter the nine digits in the boxes from left to right, starting with the top row, then the middle row, and then the bottom row, as a single string (e.g., “273854169”).

Time Standards (highlight to view): Grandmaster = 1:15, Master = 3:15, Expert = 6:30 (*Estimates from competition scoring, not our usual process)

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

Japanese Sums by Serkan Yürekli

Japanese Sums by Serkan Yürekli

PDF

Theme: Sum of 1 & 2 (for Randy Rogers)

Author/Opus: This is the 146th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place the digits 1-9 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

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 10th row from left to right. Use a capital X for empty cells.

Time Standards (highlight to view): Grandmaster = 18:00, Master = 32:00, Expert = 1:04:00

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

Sum Star by Dan Adams

Sum Star by Dan Adams

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Theme: Logical

Author/Opus: This is the 1st puzzle from guest contributor Dan Adams.

Rules: Place digits into some cells and shade all remaining cells so that: each dodecagon contains the digits 1-9 exactly once; digits in cells sharing a vertex with a black triangle add up to the indicated clue number without repeats; and shaded cells cannot share an edge with another shaded cell.

Magic Summer Example by Serkan Yürekli

Answer String: Enter the digits in the marked central rows (triangle, hexagon, triangle, …). Use a capital X for shaded cells. Separate each row with a comma. The example has the key “8178XX,243”.

Time Standards (highlight to view): Grandmaster = 16:00, Master = 32:00, Expert = 1:04:00

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

Roller Coaster by Serkan Yürekli

Roller Coaster by Serkan Yürekli

PDF

Theme: 1 to 9 (for patron Veep, who co-wrote this style for the 2016 MIT Mystery Hunt)

Author/Opus: This is the 130th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Fill each cell with a digit from 1 to 9 (1 to 6 in example) so that no digit repeats in any row or column, and also draw a single, non-intersecting loop through some of the cells in the grid. The loop cannot pass through gray cells. Numbers on the outside of the grid show the sum of digits of ALL horizontal/vertical loop segments in that row/column in order. (Note: as in column 5 of the example, only segments that pass horizontally/vertically in a row/column appear as clues; the 5 in that column is not part of a vertical segment and is not represented by a clue). Not all outside clues are given, and unclued rows/columns can have any possible distribution of loop segments/sums.

Roller Cosaster Example by Serkan Yürekli

Answer String: Enter the digits in the 1st row from left to right, followed by a comma, followed by the 6th row from left to right.

Time Standards (highlight to view): Grandmaster = 9:15, Master = 14:00, Expert = 28:00

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

Japanese+Latin Sums by Serkan Yürekli

Japanese+Latin Sums by Serkan Yürekli

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Theme: Clue Symmetry and Logic

Author/Opus: This is the 127th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Hybrid of Japanese Sums and Latin Squares. Place a digit from 1-6 (1-4 in the example) into some cells so that each digit appears exactly once in each row and column. Numbers outside the grid indicate the sums of all adjacent digits in order in that row or column.

Japanese+Latin Sums Example by Thomas Snyder

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 8th column from top to bottom. Use a capital X for empty cells.

Time Standards (highlight to view): Grandmaster = 4:45, Master = 7:30, Expert = 15:00

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