Logic Masters Deutschland e.V.

Minor Pieces

(Eingestellt am 13. Februar 2024, 20:21 Uhr von gdc)

This is a follow-up puzzle to Chess Lines, which turned out to be much harder than I anticipated. Now I tried to tune down the difficulty by only using the "minor pieces" ( knights and bishops) and have clearer signposting for the opening.Tthanks to the CtC fan discord for testing. Hope you enjoy!

  • Normal Sudoku rules apply.
  • The blue cell in the middle contains an even digit.
  • Adjacent digits on a line must form a valid chess move by the indicated piece on a 3x3 numpad.
    • For example, a 1 on a knight () line may only have the numbers 6 and 8 next to it so 6-1-8-1 would be valid. An example of a valid bishop () line would be 1-9-5-3.
  • Digits separated by a black dot are in a 1:2 ratio. Digits separated by a white dot are consecutive. Not all dots are given.

Play on SudokuPad


Here are illustrations of the possible neighbors on a bishop () and knight () line. A 5 on a bishop () line can connect to every other odd digit. 1 and 9 can also be next to each other on a bishop () line since bishops () can move multiple squares along a diagonal. A 2 on a bishop () line can connect to 4 or 6. 5 can never be on a knight () line and a knight () always has exactly 2 possible neighbors on a line. A longer run for a knight () line would be 1-8-3-4-9-2-7-6-1.

Lösungscode: Column 5, top to bottom (9 digits)

Gelöst von FlashZange, whitefox, Jreg, galium_odoratum, Willkimo, agueybana, seeppp, KyubiBoy, davidjshort, Dermerlin, Woody03130, zer0keefie, dingledork, bpcobra96, Sanklo, stramosk, Jafacake, LeLoyJenkins, ... Kawkaz, underdude, joelth, erkiraak, AboveTS, Chami, thesnwmn, Nell Gwyn, onbu, OGRussHood, SKORP17, gynu, chrysalis, Flinty, diziet, roscommon, olliwright, acascarino, Kekes, Marcus, Crusader175
Komplette Liste


am 3. April 2024, 17:34 Uhr von Crusader175
Really enjoyed solving this!

am 16. Februar 2024, 20:12 Uhr von Caconym
I really enjoyed your first chess lines puzzle and this one was even better. Just beautiful.

am 16. Februar 2024, 13:32 Uhr von apiyo
wow gdc, that was fabulous! surprisingly approachable and cool logic given what looks like a tricky ruleset.

I did a video solve on my channel, including a hilariously overcomplicated last step that I realised later wasn't needed :P


am 15. Februar 2024, 12:23 Uhr von Franjo
I can only assume: at first I was staring at the grid understanding nothing at all. Then suddenly I had my „Aha!“-moment, and could follow the solution path which turned out very smooth. Thank you so much for sharing this wonderful puzzle.

am 15. Februar 2024, 06:30 Uhr von AdarshN
I love the dawning realization that we've been given a lot more information than it might seem at first blush, and how smoothly everything flows once you figure out what *kind* of puzzle it is. Absolutely lovely!

am 14. Februar 2024, 23:53 Uhr von Snaques
This was an amazing puzzle.

The journey from "I don't even understand the rules" to the "this makes such a perfect sense" was just something you don't get too often.

Thank you gdc for setting this one!

am 14. Februar 2024, 21:17 Uhr von Fra314
Stunning puzzle, clever and beautifully constructed!

am 14. Februar 2024, 18:37 Uhr von madhupt
Very smooth and very approachable! Good fun to solve.

am 14. Februar 2024, 18:24 Uhr von yttrio
Quite "Schach"-ing just how well this rule set works :)

am 14. Februar 2024, 15:07 Uhr von harwiltz
Had an absolute blast solving this one. Love the ruleset!

am 14. Februar 2024, 14:06 Uhr von IAlreadyHaveAKey
This is a great introduction to a surprisingly interesting ruleset! will definitely be trying Chess Lines next!

am 14. Februar 2024, 04:57 Uhr von dingledork
Like @Jreg I was utterly stumped starting out, and I was really surprised by how constrained those lines are. And then I was really surprised at how obvious those constraints are if I think about them for a second. Nice puzzle, thanks @gdc!

am 13. Februar 2024, 22:11 Uhr von galium_odoratum
Definitely more approachable than your previous one, very satisfying and smooth to solve, again a brilliant construction!

am 13. Februar 2024, 22:02 Uhr von Jreg
This seemed so very confusing at the beginning but once I discovered the P-word thing (trying not to spoil but if you know you know), it was suddenly very straightforward and enjoyable.

am 13. Februar 2024, 21:45 Uhr von whitefox
Thank you for the puzzle and the example! This was my first sudoku with this rule and the example really helped me :)

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