V.2.1

Demo: stuffy.space

V.2.1

• new checkbox "show wrongs"
• infinite movement of the active cell on the keyboard

V.2

Unlike V.1, the generator creates puzzles with an emphasis on logical strategies. This version implements strategies:

• easy: Naked Single;
• normal: Naked Pair/Triple, Hidden Single/Pair/Triple;
• hard: Pointing Pair/Triple, Box-Line Reduction Pair/Triple;
• harder: X-Wing.

Controls.

• The [c] key on your keyboard and the (C) button on the screen toggles the answer/candidate entry mode. Candidates can also be entered by holding down the [Shift] key.
• The [Backspace]/[Space]/[0] keys or the (⨯) button clear the answer. In the "candidate input" mode, candidates are cleared.
• Keys [1]-[9] or buttons (1)-(9) put a number depending on the mode.
• The (h) button suggests a possible strategy. BUG: the assistant focuses on your candidates, so keep them without mistakes.
• The use highlights, show candidates and show wrongs checkboxes make it easier to find a solution. The first turns on the highlight for the selected digit. The second shows or hides the candidates. The third shows or hides your current mistakes.

1. Create redis config and development environments

rm -f redis.conf && touch redis.conf
rm -f dev.env && touch dev.env
echo 'SEC_COOKIE_HASH_KEY='$(head -c 32 /dev/random | base64) >> dev.env
echo 'SEC_COOKIE_BLOCK_KEY='$(head -c 32 /dev/random | base64) >> dev.env
echo 'REDIS_ADDRESS=redis:6379' >> dev.env
echo 'REDIS_USER_DB=0' >> dev.env
echo 'REDIS_PUZZLE_DB=0' >> dev.env
echo 'PASSWORD_PEPPER='$(head -c 32 /dev/random | base64) >> dev.env
# optional: set password for redis
export REDISPASSWORD=$(head -c 16 /dev/random | base64)
echo "requirepass $REDISPASSWORD" >> redis.conf
echo "REDIS_PASSWORD=$REDISPASSWORD" >> dev.env
# optional: enable debug logs
echo "DEBUG=true" >> dev.env

2. Run this application

sudo docker-compose up --build

3. The generator service will start generating puzzles of varying difficulty (10-15 minutes for the harder difficulty level). Open localhost:8080.