Support charity, get puzzles!
Patron Puzzles for Philanthropy

Puzzle 302: Polyominous 32

No comment.

Puzzle 301: Streaming Content 22

I have a most exciting announcement to make. Ahem.

I now have 100% completion in New Super Mario Bros.!!!

That had absolutely nothing to do with this puzzle, but I felt that it was imperative to announce it nonetheless.

Puzzle 300: Room and Reason 21

It's my 300th puzzle! Let's celebrate by quoting a movie!

"This is blasphemy! This is madness!" "Madness? THIS. . . IS. . . SPARTAAAAA!"

(Bonus points if you can guess what movie that's from.)

Do you like big puzzles, and you cannot lie? Then you're in luck -- this one's 31x45. This is the first time that I've ever built a 31x45 Room and Reason; I hope it's worthwhile! :) (This is actually on the easy side, I think, compared to some of the 31x45 Heyawake puzzles in the latest volume of Puzzle the Giants. . .)

As usual, a big thanks to all of the people who have contacted me and given me feedback. The knowledge that my puzzles are being solved and enjoyed is one of the awesomest things in this world.
Rules of Room and Reason
(click to enlarge)

Puzzle 292: Room and Reason 20

This is unrelated to the puzzle below (which has symmetrical givens, for no reason), but I have a question that might concern my readers: in the theoretical situation that I were to hold a contest of some sort where one can win Nikoli puzzle books by solving a puzzle, should I let the winner choose the books they want from this page (within my prize budget, of course) and have Nikoli ship the prize directly, or should I buy some books before the contest starts and use them as prizes? The advantages of the former is that the winner gets a choice, and it's less expensive, especially if the winner happens not to live in the United States; the main advantage of the latter is that the winner will probably get the prize much sooner, although in my experience Nikoli's high-quality puzzles are worth the wait. Also, if I ship the prize, I could write something humorous like "do not eat" on the package.

Puzzle 291: Tetra Firma 19

No comment.

Logicsmith Exhibition 3: Polyominous (RESULTS!)

Logicsmith Exhibition 3 is over now. I received 6 entries from 4 distinct people (not counting myself). I think the puzzles ended up a bit harder in this batch than in the previous batch. The added difficulty makes these puzzles feel very different from the previous ones, for better or for worse, and of course they are still very different from each other. As before, I'll go alphabetically by submitter.

This first puzzle is from Bram. This is probably the hardest puzzle in the batch -- in fact, I found it slightly unreasonable (in terms of the depth of trial and error involved). Then again, I'm a wuss who only a month ago started posting Numberlink puzzles, and your mileage may vary. In any case, it's definitely solvable. Just be forewarned of the difficulty. :)
connect4 sent this nice puzzle. If you're allergic to the numbers 1 and 2, then you're in luck -- this puzzle contains none of those.

The next puzzle is my own. It is traditional for me to give a sneak peek of my puzzle to the participants in Logicsmith Exhibition; Paul Redman said that this has "some of [my] characteristic trademarks". He's probably right. *laughs* I always try to keep my puzzles interesting, though, and not to let any one particular style make me too terribly predictable. :)
This puzzle is by miller. This one's definitely on the tougher side, I think, but extremely nice. It will keep patient experts very entertained.
Paul Redman was ambitious enough to send three puzzles. A main feature of this first submission is that it has a LOT of 4's. ("Use the 4's, Luke. . . .") It also makes interesting use of the space in the middle. I thought it was one of the easier puzzles in this batch.
This second puzzle by Paul Redman is a bit harder, but still very reasonable, and quite fun.

Paul Redman's final puzzle contains many 6's -- twenty-seven 6's, to be exact. I believe it's the hardest out of Paul's puzzles, but if you like the number 6, then you'll absolutely adore this puzzle. :)
Thanks to all the submitters for their puzzles, and enjoy solving!

Puzzle 289: Eliza Pseudonym of Puzzlania 11

Since these kinds of logic problems rely on clear prose as much as they do on valid logic, I often (as I have here) solicit editorial help from outsiders. Today, I decided to bother -- I mean, politely ask Dave Shukan (AKA Tinhorn) for his assistance. Discussing semantics with him is always intellectually stimulating, and may have been the most fun part of creating this puzzle. :)

Rules of Eliza Pseudonym of Puzzlania


Eliza Pseudonym and five of her friends (Anna, Barbra, Carla, Delilah, and Fiona) recently met together to play Bingo. In the game of Bingo, each player is given a 5x5 card, as depicted below. The columns are labeled with the letters B, I, N, G, and O, from left to right. The center space on the grid is marked as the Free Space. The objective of the game is for each player to try to be the first one to get a Bingo by filling in five spaces in a horizontal, vertical, or diagonal line on her own card. The group played 12 games of Bingo; each of the six players ended up winning exactly two games, and each possible winning Bingo line (the five rows, the five columns, and the upper-left-to-lower-right and upper-right-to-lower-left diagonals) was used exactly once. From the clues below, determine which woman won each game, and with what line.



1. No woman won two consecutive games.
2. No two consecutive Bingos incorporated the Free Space.
3. A winning Bingo was made in the upper-left-to-lower-right diagonal sometime before one was made in the upper-right-to-lower-left diagonal.
4. The first game and the last game were both won by a woman filling in a column headed by a letter contained in her first name.
5. The winner of game 5 also won a game that was either three games before or three games after the one where the winning Bingo was in the top row.
6. The winning Bingo in the column labeled I occurred sometime after the one in the bottom row.
7. Barbra won both the game immediately before and the game immediately after the game in which the second row from the top formed the winning Bingo.
8. Eliza, who was the winner of the eighth game, won an odd-numbered game via a diagonal line.
9. Carla's first victory (which was not won with a line containing the cell in the upper-right corner) was in the sixth game after the one in which the winner had filled in the column labeled G.
10. One of Delilah's wins was in the fifth game after one of Anna's wins.
11. The woman who filled in an entire column to win game 4 also won a different game that was the second game to follow the one where the fourth row from the top was filled in.

Blog Archive