Earlier this year, Thomas helped provide puzzles for the launch of the LinkedIn game Queens, a very accessible, one-star version of Star Battle puzzles. We will be posting some weekly Queens bonuses here through this season, including this very challenging one that reminds of us Araf puzzle solution shapes, which is the theme for the coming week of puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools; in composite Star Battle mode a left click places a star, right click in a cell marks off the cell, and a right click on an edge or corner marks in a dot as a placement note.)

Theme: Frame

Author/Opus: This is the 503rd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Star Battle rules. One star per row, column, and region.

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:15, Expert = 6:30

Solution: PDF and solving animation.

Note: Follow this link for other one-star Star Battle puzzles exactly like Queens, and this link for our easiest Star Battles, including many with two stars per region, which are a great way to get started on this version of the puzzle. More Star Battle puzzles can be found in these books in our e-store including our Starter Pack 5: Star Battle book.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Week 2 Discussion post on the GMPuzzles Discord.

This is a free “warm-up” puzzle; Season 4 subscribers will see today’s main puzzle in the same style posted at 9:05 AM PT.

PDF

or solve online (using our beta test of Penpa-Edit tools with a composite mode where left click inside cell marks as O or X, left click + drag draws line segment; hit tab to also access a shading mode that can be used for answer entry.)

Theme: Arithmetic Series

Author/Opus: This is the 502nd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Locate a snake (a 1-cell wide path) of unknown length in the grid, whose head and tail are given. The snake does not touch itself, even diagonally. Numbers outside the grid indicate the number of snake cells in that row/column.

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:45, Master = 1:00, Expert = 2:00

Solution: PDF and solving animation.

Note: Follow this link for other Snake puzzles. More Snake puzzles and variations can be found in Snake and Variations by Serkan Yürekli.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Week 2 Discussion post on the GMPuzzles Discord.

PDF

or solve online (using our beta test of Penpa-Edit tools with a composite mode where left click inside cell marks as O or X, left click + drag draws line segment; hit tab to also access a shading mode that can be used for answer entry.)

Theme: Clue Pairs

Author/Opus: This is the 501st puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Draw a snake (a 1-cell wide path) of unknown length in the grid, whose head and tail are given. The snake does not touch itself, even diagonally. Numbers outside the grid indicate the length of the first snake segment encountered from that direction.

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:30, Master = 1:00, Expert = 2:00

Solution: PDF and solving animation.

Note: Follow this link for other Snake puzzles. More Snake puzzles and variations can be found in Snake and Variations by Serkan Yürekli.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Week 2 Discussion post on the GMPuzzles Discord.

Today we have two “500th puzzle” celebrations from Thomas Snyder, with a more challenging Math Path for our Season 4 subscribers posting soon.

Earlier this year, Thomas helped provide puzzles for the launch of the LinkedIn game Queens, a very accessible, one-star version of Star Battle puzzles. We will be posting some weekly Queens bonuses here throughout this season, including puzzles that ended up being too large or difficult or unusual for the partner project but still perfect for our audience here. This “500 on GP” puzzle was made specifically for today’s milestone posts.

PDF

or solve online (using our beta test of Penpa-Edit tools; in composite Star Battle mode a left click places a star, right click in a cell marks off the cell, and a right click on an edge or corner marks in a dot as a placement note.)

Theme: 500 on GP

Author/Opus: This is the 500th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Star Battle rules. One star per row, column, and region.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:30, Expert = 5:00

Solution: PDF and solving animation.

Note: Follow this link for other one-star Star Battle puzzles exactly like Queens, and this link for our easiest Star Battles, including many with two stars per region, which are a great way to get started on this version of the puzzle. More Star Battle puzzles can be found in these books in our e-store including our Starter Pack 5: Star Battle book.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Week 1 Discussion post on the GMPuzzles Discord.

This is a free “warm-up” puzzle; Season 4 subscribers will see today’s main puzzle in the same style posted at 9:05 AM PT.

PDF

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

Theme: Block Party

Author/Opus: This is the 498th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Fillomino rules. Also, each row, column, and polyomino must contain exactly one star. Stars cannot be placed in adjacent cells that share an edge or corner.

See also this example:

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 0:45, Master = 2:30, Expert = 5:00

Solution: PDF and solving animation.

Note: Follow this link for classic Fillomino and this link for Fillomino variations. Follow this link for other classic Star Battles and this link for Star Battle variations.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our Week 1 Discussion post on the GMPuzzles Discord.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a number entry mode, a number candidates mode, and a path drawing mode.)

Theme: Double Vision

Author/Opus: This is the 497th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Write a number from 1 to N (N is given for each puzzle) into each cell so that every number appears in the grid once. There must be a path using just adjacent cells to travel between consecutive numbers from 1 to N. Also, the number in the upper-left corner of each bold cage indicates the value of a mathematical operation (addition, subtraction, multiplication, division) applied successively to all numbers in the cage, starting with the largest number for subtraction and division (e.g. 1,2,4 with subtraction is a 1- clue as 4-2-1 = 1). The operation may or may not be given in the cage, but at least one of the four operations must apply.

See also this example:

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 1:45, Master = 4:00, Expert = 8:00

Solution: PDF and solving animation.

Note: Follow this link for other Math Path puzzles and this link for other Number Placement variations.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our week-0-discussion thread on the GMPuzzles Discord. If you are not yet part of this Discord community, use this link.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a number entry mode, a number candidates mode, and a path drawing mode.)

Theme: Twenty Something

Author/Opus: This is the 496th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Write a number from 1 to N (N is given for each puzzle) into each cell so that every number appears in the grid once. There must be a path using just adjacent cells to travel between consecutive numbers from 1 to N. Also, the number in the upper-left corner of each bold cage indicates the value of a mathematical operation (addition, subtraction, multiplication, division) applied successively to all numbers in the cage, starting with the largest number for subtraction and division (e.g. 1,2,4 with subtraction is a 1- clue as 4-2-1 = 1). The operation may or may not be given in the cage, but at least one of the four operations must apply.

See also this example:

Difficulty: 1.5 stars

Time Standards (highlight to view): Grandmaster = 0:45, Master = 1:30, Expert = 3:00

Solution: PDF and solving animation.

Note: Follow this link for other Math Path puzzles and this link for other Number Placement variations.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our week-0-discussion thread on the GMPuzzles Discord. If you are not yet part of this Discord community, use this link.

We’re back for a fourth season of our elegant hand-crafted logic puzzles on Grandmaster Puzzles. This next week will be a free preview of what a subscription week is like. From Monday to Saturday there will be 2 daily puzzles, starting with a warm-up puzzle on the easier end and then a regular puzzle (scaling difficulty through the week). During the season itself, the warm-up puzzle will be free for everyone but the regular puzzle will be for subscribers only.

Subscribers will also get access to a Sunday Surprise every week, things like larger puzzles, extra hard stumpers, puzzle hunt puzzles, experiments with new genres, contests, and more. All puzzles have digital solving options and PDF files, as well as solution animations to help you understand steps where you might get stuck.

The schedule for the free preview week is:
Monday: Aqre
Tuesday: Math Path
Wednesday: Yajilin
Thursday: Star Battle
Friday: Fillomino (Non-consecutive)
Saturday: Consecutive Pairs Sudoku
Sunday: Masyu (giant but gentle)

Starting next Monday, the main puzzles will be for subscribers only. Subscriptions to Season 4 are $12 (only $4 per month) for about 100 puzzles.

We also have a special deal for people who purchase before the end of September: Get up to $4 off any other book/subscription on the GMPuzzles store by adding that item to the same cart when you purchase Season 4. This is a great way to pick up another GMPuzzles book, like our Starter Pack for Star Battle, or to catch up on prior subscriptions where you’ll be able to get access to all puzzles and blog posts right away.

In Arrow Sudoku, it is often a good approach to focus on possible combinations of numbers in arrows pointing in just one direction; this warm-up puzzle by Thomas Snyder is full of such arrows, all going to the right.

PDF

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

Theme: Right Way of Thinking

Author/Opus: This is the 476th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Arrow Sudoku rules.

Estimated Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:05, Master = 2:05, Expert = 4:10

Solution: PDF and solving animation.

Note: Follow this link for more Arrow Sudoku. If you are new to this puzzle type, here are our easiest Arrow Sudoku to get started on. More Arrow Sudoku puzzles can be found in these books in our e-store.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our week-0-discussion thread on the GMPuzzles Discord. If you are not yet part of this Discord community, use this link.

LinkedIn recently launched some daily games including Queens, a simplified version of Star Battle with puzzles with just one “crown” per row/column/region. Thomas Snyder has been providing the initial puzzles for that game which you can catch on this LinkedIn Queens page, with puzzles similar to today’s warm-up puzzle in difficulty.

PDF

or solve online (using our beta test of Penpa-Edit tools; in composite Star Battle mode a left click places a star, right click in a cell marks off the cell, and a right click on an edge or corner marks in a dot as a placement note.)

Theme: Tetrominoes

Author/Opus: This is the 475th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Star Battle rules. One star per row, column, and region.

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:20, Master = 0:50, Expert = 1:40

Solution: PDF and solving animation.

Note: Follow this link for other classic Star Battles and this link for Star Battle variations. If you are new to this puzzle type, here are our easiest Star Battles to get started on. More Star Battle puzzles can be found in these books in our e-store.

Note 2: Comments on the blog are great! For a more interactive discussion, please also consider using our week-0-discussion thread on the GMPuzzles Discord. If you are not yet part of this Discord community, use this link.