Thermo-Sudoku by Thomas Snyder

Thermo-Sudoku by Thomas Snyder

PDF

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

Theme: 3/25

Author/Opus: This is the 409th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Thermo-Sudoku rules.

Difficulty: 4.5 stars

Time Standards (highlight to view): Grandmaster = 10:00, Master = 17:30, Expert = 35:00

Solution: PDF; a solution video from the Cracking the Cryptic team is available here. Thomas may come back to write a “how this was made” type video in the coming weeks but the CtC solve captures most of the intended logic.

Note: Follow this link for more Thermo-Sudoku puzzles. If you are new to this puzzle type, here are our easiest Thermo-Sudoku to get started on. More Thermo-Sudoku puzzles can be found in The Art of Sudoku 2 and Masterpiece Sudoku Mix 2.

Dear GMPuzzles Family,

I haven’t been able to share more details with you on my mental health recently (not mental illness, although the first being in bad shape can lead to the other!). I wanted to give you all this update, possibly more to come later, as you all watch out for the site and for me.

Over my life, I have managed what I have called hypomanic states that can include (short) bursts of high productivity, creativity, the need to do extensive walking or running to control one’s thoughts, and diminished sleep. This past week, starting ~March 13th and provoked primarily from stresses at my scientific work, was the first time I had a full on manic episode that built over 3-4 days, including the release of an unusual amount of ideas in raw/vocal and short/tweeted form from usually dormant accounts. Over March 17th-20th, for reasons I won’t share here although they don’t involve self hurt/harm or trying to hurt/harm others, I was confined to a psychiatric ward in San Mateo for 72 hours of evaluation. I received both individual and group therapy, and have started to get better but am not yet well. Today, I was released from that facility and have my best friend watching out for me as I get resettled in my San Bruno home. I have an on-going treatment plan including on-going outpatient group/individual therapy and medications that I will be managing.

Most of the above is considered my protected health information, but I am openly sharing it because the discussion of mental health is very poor in the United States and possibly across the world. I’m not interested in hiding what I just went through, but learning more about it and making sure it doesn’t happen again to me and by proxy to others struggling with the borderline of hypomanic and manic states.

Over the coming weeks I will mostly be recuperating, and helping GMPuzzles a bit will be part of my recovery. This business is not profitable yet, but I view it as a big contribution back towards mental health given the numerous other authors and puzzle solvers who find comfort in the logic we put into the world each day. A community of both authors and solvers who may be on the autism spectrum or have dealt with depression, suicidal thoughts, or other challenging things, but been appropriately cautious to share them externally. I’m hopeful that in the coming weeks the visibility of my mental break will help us update how we all try to communicate together, by talking to people rather than talking at people, at least until we understand where they may be coming from.

I will probably be moving all of this discussion forward in other channels like my LinkedIn and not in our puzzle feed so you do not need to engage further if you do not want to.

Thanks for all your thoughts and support through the years but particularly these last few days,
Thomas (aka Dr. Sudoku)

Edited to add: Also see these videos: video 1 and video 2 for a little more commentary about where my head is at.

Edited again to add: Here is a self-contained video analyzing the week of the breakdown, some aspects of how I track my mental health, and more.

Sunday Update and Solutions

Our past Araf week is gathered in this PDF and the solutions are in this PDF. More Araf puzzles can be found here.

The daily solution videos are on the posts and linked below:

The next week of puzzles will feature Tapa-Like Loop.

Sunday Update and Solutions

Our past Tight Fit and Consecutive Pairs Sudoku week is gathered in this PDF and the solutions are in this PDF. Both of these styles are part of our latest Masterpiece Sudoku Mix books. If you purchase these books together (or any two Masterpiece Sudoku Mix books with discount code MASTERPIECE), you’ll receive a 10% discount at checkout.

The daily solution videos are on the posts and linked below:

The next week of puzzles will feature Araf puzzles.

Consecutive Pairs Sudoku by Thomas Snyder

Consecutive Pairs Sudoku by Thomas Snyder

PDF

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

Theme: Spiral

Author/Opus: This is the 408th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Consecutive Pairs Sudoku rules. (If a gray circle is given between two adjacent cells, then the two numbers in those cells must be consecutive. Note not all gray circles are given; adjacent cells without a circle may contain either consecutive numbers or nonconsecutive numbers.)

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 2:45, Master = 4:15, Expert = 8:30

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

Note: Follow this link for Consecutive Pairs Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Consecutive Pairs Sudoku to get started on. More Consecutive Pairs Sudoku puzzles can be found in The Art of Sudoku 2 and in Masterpiece Sudoku Mix 6: Consecutive Pairs Sudoku.

Bonus: Tight Fit Sudoku (Difference) by Prasanna Seshadri

This puzzle is a special Birthday Sudoku variation by Prasanna Seshadri, marking March 2, 1991 to March 2, 2022.

Tight Fit Sudoku by Prasanna Seshadri

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku = big entries and Number candidate = small entries in the corners of cells.)

Theme: Tight Fitting a New Beginning

Author/Opus: This is the 229th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Variation of Tight Fit Sudoku rules: Insert a number from {0,1,2,2,2,3,3,9} into each cell so that the full number set appears in each row, column, and bold region. Some white and black circles are given on some slashes. If there is a black circle with the slash, the bigger number must be above the smaller number. If there is a white circle with the slash, the smaller number must be above the bigger number. A number in a circle gives the difference between the two values in the cell with the slash. If the difference is 0, the color of the circle is irrelevant.

Difficulty: 2 stars

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

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

Note: Follow this link for other Tight Fit Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Tight Fit Sudoku to get started on. More Tight Fit Sudoku can be found in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli, in The Art of Sudoku 2, and in Masterpiece Sudoku Mix 5: Tight Fit Sudoku.

Two new Masterpiece Sudoku Mixes released

Today we’ve released the latest editions in our Masterpiece Sudoku Mix series. Both collections (Tight Fit Sudoku and Consecutive Pairs Sudoku) contain 25 sudoku that are masterpieces of visual and logical style, written by some of the best puzzle designers in the world. If you purchase these books together (or any two mix books with discount code MASTERPIECE), you’ll receive a 10% discount at checkout.

Note: We have not set up a digital solving option for these books yet (we have only started this for the Starter Packs but later in this year should come back). We will likely prioritize certain genres over certain book series when adding digital solving to our existing books, and some types like Tight Fit Sudoku are still in the worse part of interface support in my view.

Sunday Update and Solutions

Our past Star Battle week is gathered in this PDF and the solutions are in this PDF. More books containing Star Battle puzzles can be found here.

The daily solution videos are on the posts and linked below:

The next week of puzzles will feature Tight Fit Sudoku and Consecutive Pairs Sudoku, both types in our latest Masterpiece Sudoku Mixes (see upcoming post for more details).

New e-book – Starter Pack 1: Fillomino

We’ve just published the first volume of a new series of “Starter Packs”, books with good easy to medium (Monday to Wednesday) puzzles for some of our different puzzle genres. The first volume, Starter Pack 1: Fillomino features one of our favorite region division puzzles and comes with 30 hand-crafted puzzles by Grant Fikes.

This is also the first e-book from us that includes a set of links to Penpa-Edit versions of the puzzles for online solving. While we are still working to create a more immersive online solving experience in the future, people who buy this book will find a set of 30 web-links at the back to be able to digitally solve all of the puzzles too.

The next Starter Pack will be coming out in a couple months and will feature Tapa by Serkan Yürekli.

Sunday Update and Solutions

Our past variety mix week, with slightly easier than usual puzzles to pair with our “Starter Pack” series, has its puzzles gathered together in this PDF and the solutions are in this PDF. We’re putting the finishing touches on Starter Pack 1: Fillomino by Grant Fikes (including building very basic digital solving/Penpa option for the book) and will release that in next day.

The daily solution videos are on the posts and linked below:

The next week of puzzles will feature Star Battle, one of our favorite puzzle styles, and will have five classic and one variation during the week.