Zeroville
- Whisper lines
- Parity lines
- Palindromes
- Slow thermometers
The brief
Place six 3x2 boxes into the grid. They can be placed either horizontally or vertically, but cannot overlap.
Place the digits 1-6 in each box so that these digits do not repeat in a row, column or box. Any cell outside a box contains a zero.
The following line rules apply to all digits along a line, (even the zeroes!)
𝗔𝗟𝗧𝗘𝗥𝗡𝗔𝗧𝗜𝗡𝗚 𝗣𝗔𝗥𝗜𝗧𝗬 (RED): Adjacent digits on a red line contain one even digit and one odd digit. 𝗦𝗔𝗠𝗘 𝗗𝗜𝗙𝗙𝗘𝗥𝗘𝗡𝗖𝗘 (TURQUOISE): Adjacent digits on a turquoise line have the same difference, to be determined. 𝗣𝗔𝗟𝗜𝗡𝗗𝗥𝗢𝗠𝗘 (YELLOW): A yellow line reads the same in either direction. 𝗚𝗘𝗥𝗠𝗔𝗡 𝗪𝗛𝗜𝗦𝗣𝗘𝗥 (GREEN): Adjacent digits on a green line have a difference of at least FIVE. 𝗥𝗘𝗚𝗜𝗢𝗡 𝗦𝗨𝗠 (DARKER BLUE): Box borders divide the darker blue line into segments. The digits on each segment have the same sum. 𝗭𝗜𝗣𝗣𝗘𝗥 (LAVENDER): Two digits that are an equal distance from the central spot on a lavender line sum to the digit on that central spot. 𝗦𝗟𝗢𝗪 𝗧𝗛𝗘𝗥𝗠𝗢 (GREY): Starting at the end with the bulb and moving along it, digits on a slow thermo always increase or stay the same (but never decrease.)