Logic Masters Deutschland e.V.

am 22. Juni 2026, 14:41 Uhr von superkinkel
Oh my god, I struggled with this one so much. I spent ages focussing on disambiguating the potential Kropki pairs, when actually the question were the 1 can and cannot go, makes this a easy as it could be.

am 13. Juni 2026, 07:39 Uhr von VitP
there IS an "easy" solution if you know your way around these variants. it does not require serious bifurcation, or grid-wide colouring.

1) 1-2 black kropki is illegal.
1a) therefore, there are TWO flavours of black kropki, 3-6 & 4-(2/8)

2) start in a box with 2 black kropkis, eg. 9. assume one configuration, & track the colours around the grid. there is a problem on row 1.

3) this gets you the 4s, and then the 3-6s pairs follow directly, and then the rest just flows in like water.

super easy for experts. likely out of reach of beginners.

am 13. Juni 2026, 07:28 Uhr von VitP
this is NOT level 2.
it requires either
a) a priori knowledge of the grid-wide miracle structure, not common knowledge
b) working it out from scratch

am 8. Juni 2026, 12:01 Uhr von KingIsulgard
21 minutes for me. But without knowing about the consequences of this ruleset, with regular brute force coloring, this would be a 4 star imho.

am 2. Juni 2026, 20:02 Uhr von addie
JVA, okay thank you for trying it!

am 2. Juni 2026, 17:12 Uhr von JVA
I do appreciate the help, really, but I'm giving up on this puzzle. It's beyond me.

am 2. Juni 2026, 00:19 Uhr von addie
To anyone who doesn't want a hint/spoilers, don't read this comment!

To JVA: Here is a method that might help you start if you want a more specific hint. Try bifurcation on the V pair again. Since one of the two cells in the V pair will be a 1, test them both. Using the antiknight, antiking, and nonconsecutive rules (meaning there can be no 1 in any kropki pair), you should be able to determine which cell in the V pair is the 1. From there you should be able to find all the 1s.
That should help you get started, if you want the next step let me know!

am 1. Juni 2026, 19:59 Uhr von addie
JVA, have you tried bifurcation? I know it's controversial, but personally I use it a lot because I don't know many strategies/rules. It would definitely help with this puzzle!

am 1. Juni 2026, 18:54 Uhr von JVA
Coloring has gotten me nowhere, because there's three flavours (2*4, 4*8, 3*6).
I think I'm just going to give up on this one, if the hints are the same strats I've already tried and failed at, that probably means the puzzle is too difficult for my level

am 1. Juni 2026, 18:41 Uhr von itsid
that's been easy.. I stared at the endgame for a while until I realised that 7 not only is next to eight, it's alöso next to six... sometimes I swear I have a brain tumor *duh*

JVA: color the grid first,
and I bet you know there are two flavours of black kropki pairs.. so label them as well..
with that and colours you will most certainly notice which label is what flavour and you can go from there

am 1. Juni 2026, 18:11 Uhr von JVA
That's what I've been trying to do for half an hour, but there's 3 potential combinations for the dots and I don't see a way to restrict any of them

am 1. Juni 2026, 15:57 Uhr von addie
JVA, focus on the combination of the nonconsecutive rule and the kropki dots!

am 1. Juni 2026, 15:49 Uhr von JVA
I'm finding this way, way, way harder than any other antiknight + antiking + sudoku I've done, any hints for the break?

am 1. Juni 2026, 01:16 Uhr von tuberculosis
Very nice. Took me a bit to crack the first digits but went quickly after that.

am 1. Juni 2026, 00:48 Uhr von addie
Myfyr MJ, not all black dots are necessarily given. Thanks for pointing that out, I made the rules clearer!

am 1. Juni 2026, 00:47 Uhr von addie
Rule clarification

am 31. Mai 2026, 22:39 Uhr von Myfyr MJ
As all white dots are given (none), are all black dots given or not? Can you clarify the rules? Thanks.

am 31. Mai 2026, 21:29 Uhr von Mizuki
Fun!

am 31. Mai 2026, 19:44 Uhr von addie
Image

am 31. Mai 2026, 19:43 Uhr von addie
Fixed rules

am 31. Mai 2026, 19:41 Uhr von addie
Added image