Unfortunately it's in Thai language, which I not understand.
Looking the video, it looks like trial and error.
Is there someone capable to solve this with logic?
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1to9only wrote:SE rates this as ED=7.9/1.5/1.5.
urhegyi wrote:1to9only wrote:SE rates this as ED=7.9/1.5/1.5.
Meanwhile I solved it, but it's rather extremely hard. I looked for bivalue cells with only 2 possible candidates. Sometimes one of them wasn't possible because it emptied a region, so no placement was possible for this candidate or in another case it led to a contradiction with an already known given. So this bifurcation technique is actually a way of trial and error. I wondered if anyone could solve this with logic, probably with neater nichio chains.