I got a bit late when it comes to keeping my alternate day schedule so here are 3 puzzles to make up for it.
Only the last one is “fresh”. The first one is a bit silly but also probably nice, I was experimenting with an idea, some people on discord have seen it already. The second one, the variant, is from a speedsetting contest quite a while ago. We had an hour to construct a Palindrome variant. This one took me about 35 minutes if I recall correctly. The third one is just a vanilla Tapa.
Tapa Rules: Shade some empty cells to create a single connected wall. Numbers in a cell indicate the length of consecutive shaded blocks in the neighboring cells. If there is more than one number in a cell, then there must be at least one unshaded cell between the shaded cell groups. Cells with numbers cannot be shaded, and the shaded cells cannot form a 2×2 square anywhere in the grid.
Palindrome variant additional rules: There are one or more palindrome lines drawn in the grid. The pattern of shaded and unshaded squares will be the same when read from either end of a line.
Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.
I was experimenting with something of a Palindromic Loop, but ran out of time, so gave it up and just went for an almost-connect-structure. I think because of the size of the Palindrome, this may be harder than the rating, just considering keeping track of the equalities. But, logically, I don’t think its too tricky.
Rules – Follow regular Sudoku rules. The numbers formed by the digits on the gray lines are palindromes, that is to say, they can be read equally in both directions.
On a lot of fronts, its been a horrible start to the New Year for me so far. However, one good thing stands out right now, and that is the start of “Champion Sudoku”. Basically, me and my fellow bloggers Rishi Puri, Tom Collyer, Fred Stalder, Seungjae Kwak , etc. (the list is growing but these are the 5 authors confirmed this week so far) have planned a series of Sudoku variants that will be released in a PDF at the week’s end. If you are interested in joining in with this project, either to solve along, or to contribute, or anything else, please get in touch, or else join our facebook group.
My turn was a Palindrome Sudoku that you see below. I find this one quite tricky and its been confirmed by most of the above top solvers as such. The Palindrome Masyu has a tricky bit in the middle too. So I’d rate both at a light hard maybe.
For 266 : Follow regular Sudoku rules. The numbers formed by the digits on the gray lines are palindromes, that is to say, they can be read equally in both directions.
For 267 : Follow regular Masyu rules, except that the circles aren’t given. Instead there are shaded areas. Every cell of these areas must contain a Masyu circle, black or white. Also, each distinct shaded area is a Palindrome, so a certain color circle on one end means the same color circle on the other end and so on.