Archive for the ‘Puzzle’ Category:

Sunday Surprise #13 – Gapped Kakuro by Serkan Yürekli

Serkan finished this “Giant” puzzle shortly after we started our break. We figured this Gapped Kakuro would be a fun, challenging Sunday Surprise that might take several Sundays to complete.

Gapped Kakuro by Serkan Yürekli

(view directly for a larger image)

PDF

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

Theme: Sum Time

Author/Opus: This is the 72nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Standard Kakuro Rules. Also, some cells may remain empty but empty cells cannot share an edge with other empty cells.

Answer String: Enter the values in the white cells in the marked rows from left to right, ignoring all black cells, and separating the rows with a comma. Use a capital ‘X’ for any blank cell.

Time Standards (highlight to view): Grandmaster = 50:00, Master = 1:30:00, Expert = 3:00:00

Solution: PDF

Note: Follow this link for other Kakuro puzzles.

Bonus: Little Killer Sudoku by Thomas Snyder

Little Killer by Thomas Snyder

PDF

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

Theme: Digit Series and Clue Symmetry

Author/Opus: This is the 227th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules. Additionally, some numbered arrows outside the grid indicate the sum of the numbers along that diagonal path. (Numbers can repeat along a diagonal sum.)

Note: No answer strings or timing here (honor system for when you solve it). I’m simply posting some “examples” I wrote as the Sudoku Grand Prix coordinator. Apparently some common variants aren’t common enough….

Solution: PDF

Bonus: Double Doku by Thomas Snyder

Double Doku by Thomas Snyder

PDF

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

Theme: Diagonals

Author/Opus: This is the 226th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules. Additionally, there are two overlapping classic sudoku grids, and both must have valid solutions.

Note: No answer strings or timing here (honor system for when you solve it). I’m simply posting some “examples” I wrote as the Sudoku Grand Prix coordinator. Apparently some common variants aren’t common enough….

Solution: PDF

Bonus: Neighbor Sums Sudoku by Thomas Snyder

Neighbor Sums Sudoku by Thomas Snyder

PDF

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

Theme: Digit Series and Clue Symmetry

Author/Opus: This is the 225th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules. Additionally, some edges are marked with the sums of the digits in the adjacent cells.

Note: No answer strings or timing here (honor system for when you solve it). I’m simply posting some “examples” I wrote as the Sudoku Grand Prix coordinator. Apparently some common variants aren’t common enough….

Solution: PDF

Arrow/Thermo-Sudoku by Prasanna Seshadri

Arrow Thermo-Sudoku by Prasanna Seshadri

PDF

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

Theme: H (patron puzzle created for Paul Hlebowitsh)

Author/Opus: This is the 80th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Arrow Sudoku rules. Also, standard Thermo-Sudoku rules.

Answer String: Enter the 4th row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 5:15, Master = 7:45, Expert = 15:30

Solution: PDF

Note: Follow this link for more Arrow Sudoku. Follow this link for more Thermo-Sudoku puzzles. More Arrow and Thermo-Sudoku puzzles can be found in The Art of Sudoku 2.

The Persistence of Memory by Prasanna Seshadri

The Persistence of Memory by Prasanna Seshadri

(View image directly for larger form.)

PDF

or solve online (using our beta test of Penpa-Edit tools using a composite mode where left click inside cell shades square, left click + drag draws line segment, right click inside cell adds dot, and right click on cell edge adds an x.)

Theme: TYCG (Thank You, Chris Green) — this is a Patron Puzzle reward.

Author/Opus: This is the 79th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Find a path from one dot to the other by moving horizontally or vertically between adjacent squares. The path cannot touch itself, even diagonally. All highlighted regions must be visited by the path, and may be re-entered. If two or more highlighted regions have the same shape and orientation, then how the path passes through those shapes must be identical. Or see here.

Answer String: Enter the length in cells of the horizontal path segments from left to right in the marked rows, starting at the top. If the path only has vertical segments in the marked row, enter 0. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 4:15, Master = 6:00, Expert = 12:00

Solution: PDF

Fillomino by John Bulten

Fillomino by John Bulten

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a number entry mode.)

Theme: 28 Dice

Author/Opus: This is the 10th puzzle from our contributing puzzlemaster John Bulten.

Rules: Standard Fillomino rules.

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 5th row, followed by a comma, followed by the 9th column.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 7:15, Expert = 14:30

Solution: PDF

Note: Follow this link for other classic Fillomino. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.

Tapa (Cipher) by Carl Worth

Tapa by Carl Worth

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode, a number entry mode for placing Tapa clues, and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Logical

Author/Opus: This is the 8th puzzle from guest contributor Carl Worth.

Rules: Standard Tapa rules, except that the digits have been encoded with a cipher into letters. Each letter represents a different positive integer, for the solver to determine.

Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.

Time Standards (highlight to view): Grandmaster = 2:30, Master = 4:00, Expert = 8:00

Solution: PDF

Note: Follow this link for other Tapa variations and this link for classic Tapa. If you are new to this puzzle type, here are our easiest Tapa puzzles to get started on.

Snake Egg by Murat Can Tonta

Snake Egg by Murat Can Tonta

PDF

or solve online (using our beta test of Penpa-Edit tools using a composite mode where left click inside cell shades square, left click + drag draws line segment, right click inside cell adds dot, and right click on cell edge adds an x.)

Theme: Minimalism

Author/Opus: This is the 19th puzzle from guest contributor Murat Can Tonta.

Rules: Locate a snake (a 1 cell-wide path) in the grid whose head and tail are given. The snake can touch itself diagonally, but cannot touch itself orthogonally or revisit any square. Besides the snake, the remaining cells must form exactly nine white areas, one of each size from 1 to 9. Numbers in the grid must be part of white areas of the indicated size.
(Also see here: https://yureklis.wordpress.com/2012/07/02/snake-egg/)

Answer String: Enter the length in cells of each of the snake segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.

Solution: PDF; a solution video is available here.

Time Standards (highlight to view): Grandmaster = 3:15, Master = 4:15, Expert = 8:30

YVGF ol Tenag Svxrf

YVGF ol Tenag Svxrf

CQS

be fbyir bayvar (hfvat bhe orgn grfg bs Cracn-Rqvg gbbyf; hfr gno gb nygreangr orgjrra n funqvat zbqr naq n zbqr gb znex rqtrf jvgu na K.)

Gurzr: Fcbvyre-serr

Nhgube/Bchf: Guvf vf gur 166gu chmmyr sebz bhe pbagevohgvat chmmyrznfgre Tenag Svxrf.

Ehyrf: Fgnaqneq YVGF ehyrf (jneavat: yvax znl pbagnva fcbvyref!).

Nafjre Fgevat: Ragre gur yratgu va pryyf bs rnpu bs gur funqrq frtzragf sebz yrsg gb evtug sbe gur znexrq ebjf, fgnegvat ng gur gbc. Frcnengr rnpu ebj’f ragel sebz gur arkg jvgu n pbzzn.

Gvzr Fgnaqneqf (uvtuyvtug gb ivrj): Tenaqznfgre = 4:00, Znfgre = 5:15, Rkcreg = 10:30

Fbyhgvba: CQS

Abgr: Sbyybj guvf yvax sbe bgure pynffvp YVGF. Vs lbh ner arj gb guvf chmmyr glcr, urer ner bhe rnfvrfg YVGF gb trg fgnegrq ba.