Weird Bug 2

Consider Weird Bug from two weeks ago. When I did a recheck of settings, I found that Windows had changed a setting. I have heard of Windows doing this, but I had not seen it before. I still think there may be something wrong about my system’s hardware, but once I changed this setting, my system now behaves as I wish.

Puzzle #308: Tetrominoes

Take four squares. Form flat shapes using all four squares connecting the squares on sides of the squares along the full length of the side. These are called tetrominoes.

How many tetrominoes are there?

(Note that some tetrominoes are mirror images of each other. Count these as distinct. Two tetrominoes are not distinct if you can spin one on a flat surface and end up with the other.)

Submit your answer to Gene Wirchenko <genew@telus.net>. Your answer should be in the form of a proof. That means to show how your answer must be correct. The deadline is Wednesday, May 1, 2019 at noon Pacific Time. I will post the answer shortly after.

Puzzle #306 Solution: Games

Spoiler Inside: Solution to Puzzle SelectShow

In Reverse

One can get very used to doing something in a certain order. Trying to do it in a different order can be very difficult.

An example of this is reciting the alphabet. Try it in reverse. How did you do?

An artistic case of this is painting in the interior of snuff bottles as related in this article. There is a lot of skill here and some very beautiful results.

Odd Language #304: Reiwa What?

Akihito, Emperor of Japan, will shortly abdicate in favour of his son, Crown Prince Naruhito. A name for the new era has been chosen: Reiwa.

The issue: Unfortunately, the official English translation “beautiful harmony” has another connotation as related in this article. The title of the article is “The official English translation of Japan’s new era name is an anime porn game theme song”. Oops! At least, it no longer shows at the top of Google search results.

Puzzle #307: Six Blocks

You are at the southwest corner of a 3-by-3 square block area. You wish to walk to the northeast corner. There are only the four streets north-south and four streets east-west in this area. It is obviously a six-block walk, but how many routes are there that are six blocks long?

Submit your answer to Gene Wirchenko <genew@telus.net>. Your answer should be in the form of a proof. That means to show how your answer must be correct. The deadline is Wednesday, April 24, 2019 at noon Pacific Time. I will post the answer shortly after.

Puzzle #305 Solution: Race

Spoiler Inside: Solution to Puzzle SelectShow

Weird Bug

My desktop computer system has been acting up. When the system has not been used for a while, the screen blanks. This is fine, but somehow, now, it does not restore the display when I press a key. I have to turn the monitor on and off and press keys or mouse buttons several times. I apparently have to do both, yet the monitor works perfectly fine on another computer. Go figure.

Odd Language #303: Endianness

Gulliver’s Travels had people debating which end of an egg should be opened first. Big-Endians opened them from the big end, and Little-Endians opened them from the little end. Sounds silly?

The issue: Gulliver’s Travels was a satire, but the terms are now used to indicate how numbers are stored in a computer. Arguments over which is better can get as heated as in the satire, and there is even another term now: “middle-endian”.