Puzzle No. 493 : Maxi Loop + LMI Patreon Update

Hello, dearest readers! Its… been a while. Sorry about that. I feel I’ll have more time for this place come May. For now, I’d like to draw your attention to the fact that Logic Masters India has started its own Patronage system. Please check out our page on Patreon and on LMI itself. The Puzzle pack rewards are currently all written by me, but future ones will definitely have other Indian authors involved too. If you like the hosting features LMI has to offer and/or find the rewards enticing enough, please consider supporting us. I’ve taken up a few things on behalf of LMI here in India, all towards making our group more recognized in the country. Funding certainly helps this.

Anyway, I feel a little bad that I’m only making a blog post when I want to promote something, so here’s a Maxi Loop puzzle to go along with it. I hope you enjoy it!

Rules for Maxi Loop.

Rated – Easy with a slight pause.

Solution.

P493

P493

Puzzle No. 484-487 : Polish Qualifier Puzzles [Ex-Contest]

Check this post for reference on this blog’s 3 main types of posts from now on. I’ll post smaller sets like this one here, and keep I’m hoping to start a patronage system of my own for bigger sets. More on that later.

Right, just about got this in today. I won’t be home over the weekend, so whether I get a sample of the Instructive tagged post out depends on getting an internet connection where I’ll be staying. I’ll be back on Monday though, so will have it up at latest by Monday night.

This set might seem to have some tough puzzles for a National qualifier (not finals), but I was told that there were many easy puzzles already. Two of the puzzles are types I saw in a book purchased from team Japan at the WPC. It is a collaborative work featuring Serkan Yurekli and many Japanese authors. I’ve changed one rule slightly for Heyawacky block (more an omission than a change) but I prefer it this way personally. Anyway, here they are. Enjoy!

Rules –

484 – Yajilin.

485 – Heyawacky Block – Blacken some cells so that all remaining cells must be connected orthogonally. Any single horizontal or vertical line of white cells cannot traverse more than one thick line. Numbers indicate the amount of black cells in that region. If there is no number, there can be 0 or more black cells. Inside each region, all black cells are connected orthogonally. But black cells must not be orthogonally connected beyond the border lines.

486 – Nurikabe.

487 – Snake BY – Draw in the grid a snake, not touching itself, even diagonally. Each outlined region must contain exactly 3 cells occupied by the snake. The regions that contain the head and the tail of the snake are marked by grey color.

P484

P484

P485

P485

P486

P486

P487

P487

 

Puzzle No. 478 : Christmas Loop

Just about got a crazy idea in time to execute it on Christmas day. Thanks to Chaotic Iak and Tiit Vunk for testing this one. The puzzle itself is pretty difficult. The rules are complex. So, Merry Christmas everyone! *evil laugh*

Oh and thanks to Tawan for hosting the wonderful contest Colour Restore, which I won, because I’m the KING of Rock-Paper-Scissors B-) Actually, that’s where the entire inspiration for this idea started, the colours, which is mainly why I wanted the colours to be able to help in the solve in some way. So thanks for that too.

Rules –

Part 1 – Cipher Fillomino – Using Fillomino rules, divide the grid into regions. The numbers are all replaced by colours. Same numbers are represented by the same colour, and different numbers by a different colour.

Part 2 – Regional Railroads – Draw a loop that passes through every cell of the grid and doesn’t overlap itself. It can cross only on cells with a + sign and has to cross on every cell with a + sign. Each region in the grid must have at least one continuous instance of the loop passing through all it’s cells.

Part 3 (Not necessary for the puzzle to be unique. You can skip ahead to the puzzle with the rules above without this helper) Colour Combinations – The 3 common ways that colours mix to form other colours ((Red, Blue, Purple)(Blue, Yellow, Green)(Red, Yellow, Orange)) will form 3 groups where the colour values can make the arithmetic equation A+B=C valid somehow. (e.g. Red +Purple = Blue)

Rated – Hard of course.

If you want an easier version than even the part 3 helper, here’s an image with the equations between colours directly given.

P478

P478

Puzzle No. 465, 466 : 5 Stars, Every Second Straight

These are the last of the WPC practice puzzles.

Rules  (as in WPC IB) –

For 465 (Serbian Snacks, round 7) – Place five stars into the grid so that their cells do not touch each other or cells with numbers, not even diagonally. One of the stars is large and covers 3 x 3 cells, the others are small and cover a single cell. Digits denote the number of cells occupied by stars in the same row/column.

For 466 (Dutch Delight, round 4) – Draw a single closed loop that consists of horizontal and vertical segments and visits every cell exactly once. Along the loop, every second cell where the loop makes no turn is marked with a circle.

Enjoy!

P465

P465

P466

P466

Puzzle No. 460, 461 : Breakpoints, Gemini Loop

Sorry about the week long absence, dear readers, just a badly hectic schedule. Everything hopefully back to normal now. There’s still a few WPC practice puzzles left. I’ll go two at a time from here.

I hope you checked out the Beginners’ Puzzle Contest I organized and authored on LMI. This coming weekend, there’s the Screen Test #4, which also, I have authored. For any Bangalore residents (or anyone in that area around that time), the Bengaluru Brain Games shall held be this weekend. Me and Rohan are organizing the Puzzle and Sudoku events here, as always. (I think this last paragraph speaks for itself about the week long absence)

Anyway, today’s puzzles, are two loop puzzles.  I think the Gemini loop has a nice opening. Other than that, nothing too challenging, but ok enough for practice.

Rules –

P460 – Draw a single, non-intersecting loop that passes through all cells. Numbers in the grid indicate how many times the loop makes a 90 degrees turn in the cells surrounding that number.

P461 – Draw a single closed loop that consists of horizontal and vertical segments and visits every cell exactly once. Cells with identical letters contain identical loop segments, cells with different letters have different loop segments. The direction of the loop is not considered, in other words the loop may go through cells with identical letters from left to right the first time and from right to left another time.

(Rules are as they were in the WPC Instruction Booklet, Breakpoints was in Round 9, Assorted Puzzles and Gemini Loop was in Round 4, Dutch Delight)

Enjoy!

P460

P460

P461

P461

Puzzle No. 438 : Bosnian Road

Tapa Season (TVC, CTC) is past halfway and now getting really interesting at the top in both competitions. I’m really happy with my improvement this year from last year’s inconsistencies. Hoping to end well now. TVC XV is going on this weekend.

Nothing much to say about this puzzle. Just that I like the top opening, although its not that tricky to spot.

Rules

Rated – Medium.

P438

P438

Puzzle No. 434 : Masyu

I confess, I totally forgot about my own blog schedule, and got this one out in a real hurry. As a result, its turned out really hard. I’ll keep it that way, even if it might border on guesswork. There’s a pattern to be found though, and using symmetry and some visualization, progress can be made, and after that, its fairly easy to finish up (since the pattern’s pretty big, that’s not surprising).

Rules for Masyu.

Rated – Hard.

Enjoy!

P434

P434