Puzzle No. 488 – Fillomino [Instructive]

Check this post for reference on this blog’s 3 main types of posts from now on.

The instructive post-type is (for now) mainly a way to “rehearse” my way of explanation for a certain target audience, while also giving the general puzzle solvers an easy puzzle to solve. I will not cover any complex techniques here, because the end result I’m looking at is designing a curriculum with more detailed explanations. I will mostly just hint at the starting point and a basic technique that’s necessary to solve the puzzle in question.

The instructive PDF’s definitely just for complete newcomers to the puzzle type, so I’m posting the puzzle image below the PDF anyway, so the experienced solvers can solve it directly.

PDF – Fillomino_Instructive

Enjoy!

P488

P488

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Puzzle No. 475 : Untouch – AntiKnight Sudoku [Daily League]

First, PDF!

The League of Extraordinary Ladies and Gentleman_week48

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.

I’m gonna need a while to get used to the Thursday schedule. Totally forgot that this is my day now. This one’s quickly made, and so some will feel this is “half” the puzzle it could be. It’s still challenging though, and should still be fun I hope.

Rules – Follow regular Sudoku rules. Additionally, same numbers cannot touch diagonally and also can’t be a chess knight’s step away from each other.

Rated – Hard.

Enjoy!

P475

P475

Puzzle No. 472, 473 : Shakashaka, Fillomino

Heh. Will get back to Tuesday-Thursday-Sunday from the coming week. Also, my Puzzle posts will be Tuesday and Sunday now, and the Daily League post will be on Thursday. This is to accommodate Richard Stolk on Tuesdays.

Anyway,

Rules – 

P472Rules for Shakashaka.

P473 – Rules for Fillomino.

Enjoy!

P472

P472

P473

P473

Puzzle No. 458 : Neighbours

More of those WPC practice puzzles. This puzzle type was present in the Dutch Delight round.

Rules – 

Place digits 1–3 in the grid so that in each row and column, each digit appears three times. Numbers in grey cells do not share an edge with a cell containing the same number. Numbers in white cells share an edge with at least one cell containing the same number. Cells that are not painted grey should be considered as white.

Rated – Medium

Enjoy!

P458

P458

Puzzle No. 456 : Sudoku +/-4 [Daily League]

More of the practice puzzles I wrote for Team India. This variation was in the WPC and IS pretty puzzly, but I’m pressed for time and this solved the purpose of a Sudoku post.

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay. However, I spoke to Karel and chances are this one might not be interface friendly. Do check in tomorrow if you want to though, just in case.

Rules – 

Enter whole numbers between -4 and +4, inclusive, into the grid so that each row, column and region contains all possible numbers exactly once. Clues outside the grid indicate the sum of all numbers that appear between the clue and the cell containing zero in that row/column. Some cells already contain a number. However, the signs for these clues are not indicated, it is part of the puzzle to determine whether they are positive or negative values.

Rated – Hard.

Enjoy!

P456

P456

Puzzle No. 451 : Inside Skyscrapers Sudoku [Daily League]

This post has been scheduled to appear on Tuesday evening. If it appears before/after that, blame WordPress 😛 Anyway, this is a Sudoku I had written for Team India’s practice, and since as of today the relevant round will have been done in the morning, it can be shared to the general public. The Sudoku is quite challenging. I like how it turned out.

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.

Rules for Sudoku. Consider each number to be the height of a building. Digits within cells with arrows indicate how many buildings can be seen when looking in that direction from the focal cells (taller buildings conceal buildings smaller or of equal height behind them).

Rated – Hard.

Enjoy!

P351

P351

Puzzle No. 450 : Product Sudoku [Daily League]

Update – Oops. Looks like I forgot to add the variation rules!

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.

Rules for Sudoku. In each gray square of four cells, the two bottom cells make up a two-digit number which is the product of the two digits in the upper cells.

Rated – Easy.

Enjoy!

P450

P450

Puzzle No. 443 : Monopoly-Untouch Sudoku [Daily League]

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.

Rules – Follow regular Sudoku rules. Additionally, numbers in shaded cells along each side must be increasing in clockwise direction (so 4 sets of increasing numbers over 6 cells each). Also, same digits cannot touch each other even diagonally.

Rated – Medium.

Enjoy!

P443

P443

Puzzle No. 439 : Arrow Sudoku [Daily League]

I’ll be posting about a Championship and my puzzles in it tomorrow. For now, I didn’t want to crowd up this post.

Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay. Speaking of Sudokucup, much thanks to Karel for providing this version of the image, with the arrowhead present in the circle. I think it provides more clarity than the version I had drawn up before it.

Today’s Sudoku was quickly put together because I couldn’t really get much time to think for it. That, in general, seems to be a good thing, because I always over-think things these days when it comes to picking variants/puzzles/themes that I want to do. Not sure why thats happening now.

Anyway,

Rules – Follow regular Sudoku rules. Additionally, the number in a circle is the sum of the digits which are covered by its arrow. For circles with multiple arrows, apply the rule for each arrow separately.

Rated – Medium (I think). 

Enjoy!

P439

P439