pgblu

<h1>(((Title)))</h1>

<div style="display:flex;justify-content:center;align-items:center;width:100%;clear:both;text-align:center">
<span style="max-width:450px;"><img:(((Image id)))></span>
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<p>(((Instruction paragraph)))</p>
<p>(((Instruction paragraph)))</p>
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<p><a href="https://f-puzzles.com/?id=(((puzzleID)))">F-puzzles link</a></p>

pgblu

Here are the 24 arrangements of sudoku numbers such that each placed digit behaves like a queen, i.e., no instance of a given digit "sees" a copy of itself along a diagonal. They are in no particular order. In each grid, digits 1-7 are represented, and 8 & 9 would need to be filled in where there are zeros. The 24 grids all 'collapse' to only 4 unique patterns, with 8, 8, 4, and 4 reflection/rotational equivalents each.

Most of these arrangements are broken, however, as you cannot place exactly one 8 and one 9 in each box, column, and row without clashes. The exceptions are grids 3, 7, 19 and 20 (which are rotations of one another). Those four are therefore the only possible solutions to sudokus with 7 queens, disregarding transposition (i.e., substituting a different permutation of digits for 1-9).

The other 20 arrangements are still useful, however, as they can be used as the basis for puzzles with 6, 5 or fewer queens.

Grid 1. (broken)

123|450|670
407|613|052

pgblu

digits = (1..9).to_a
evens, odds = [0,1].map {|num| digits.select{ |k| k % 2 == num}}

def all_subsets(ar)
	result = []
	0.upto(ar.length) do |num|
		result += ar.combination(num).to_a
	end
	result
end

pgblu

# Usage: ruby commit-prepender this is my commit message without quotation marks
branch_name = %x.git rev-parse --abbrev-ref HEAD.
regex = Regexp.new(/[A-Z]*-[0-9]*/)
string_to_prepend = branch_name.match(regex).to_s
cmd = "git commit -m \"[#{string_to_prepend}] #{ARGV.join(" ")}\""
`#{cmd} >&2`

pgblu

dictionary = IO.readlines("path/to/your/dictionary").map {|word| word.chomp}

# you can replace "path/to/your/dictionary" with "/usr/share/dict/words", but I
# recommend a smaller dictionary, such as the one I've saved here: 
# https://github.com/pgblu/dryphtwords/blob/master/app/fixtures/main_dictionary.txt

needed_length = ARGV[0].to_i
dropped_letter = ARGV[1]

pgblu

let color1 = Math.round(Math.random() * 0xFFFFFF);
let fill1 = '#' + color1.toString(16).padStart(6,'0');

pgblu

Beckett-Gray sequences

viz. https://arxiv.org/pdf/1608.06001.pdf for a definition and discussion. The authors of the linked article were kind enough to provide me with the sequences.

pgblu

//mobile nav trigger
$('#menu-trigger').click(function (e){
	e.preventDefault();
	$('body').toggleClass('active');
	$(this).toggleClass('active');
});

pgblu

dryphtwords

=============

A suite of tools that generate, validate, and serve examples of the Dryphtword game

How to play

This game takes a bit of getting used to.

pgblu

# add this to your .bash_profile
# pomo() takes 0,1, or 3 arguments
# 1st is a time in minutes (default 25)
# 2nd and 3rd are a just-intonation ratio x:y (default 4:3)
# End the process with ctrl-C.

function pomo() {
    case $# in
    [0]*)
        chuck ~/Documents/ChucK/pomo.ck