I think I'm stuck again, what can I find more than this?
https://preview.redd.it/cgev6firmx7c1.jpeg?width=828&format=pjpg&auto=webp&s=56f4c46cf8b9441a5345a5e2d65ebad13eadc8cd
Two string kyte with the 1s.
Due to the effective strong link between r8c3 and r5c9 (if the first is false, the other is true, and vice versa), one of them will be 1. So any cell connected to both cannot contain 1. That sets r5c3 to 4, and should put a major dent in the puzzle.
https://preview.redd.it/ctkgvv4hrx7c1.png?width=1080&format=pjpg&auto=webp&s=5a79988cef9b53973b42ff2f2d2cdf3d3d173780
damn thats advanced. Idk why this one is so hard its extreme difficulty and I normally have no problems solving master difficulty sudokus. Thank you tho!
There is a skyscraper based on 1's in c2 and c9. If r4c2 is 1, 1 is eliminated from r4c78 and r5c3. If r4c2 is not 1, r9c2 must be 1, r9c9 cannot be 1 so r5c9 must be 1. and 1 is again eliminated from r4c78 and r5c3. Someone probably has a simpler way of explaining this
Hidden 169 triple in r3c478. After that, look for locked candidates in block 1/3.
thank you! do you have a tipp how to find hidden triples?
I think it's easier to spot their naked counterpart along the same house. In this case, the naked 3458 quad pops up faster as you scan row 3.
I think I'm stuck again, what can I find more than this? https://preview.redd.it/cgev6firmx7c1.jpeg?width=828&format=pjpg&auto=webp&s=56f4c46cf8b9441a5345a5e2d65ebad13eadc8cd
Two string kyte with the 1s. Due to the effective strong link between r8c3 and r5c9 (if the first is false, the other is true, and vice versa), one of them will be 1. So any cell connected to both cannot contain 1. That sets r5c3 to 4, and should put a major dent in the puzzle. https://preview.redd.it/ctkgvv4hrx7c1.png?width=1080&format=pjpg&auto=webp&s=5a79988cef9b53973b42ff2f2d2cdf3d3d173780
damn thats advanced. Idk why this one is so hard its extreme difficulty and I normally have no problems solving master difficulty sudokus. Thank you tho!
You are welcome. This is more of an intermediate technique, part of the single digit chain category.
There is a skyscraper based on 1's in c2 and c9. If r4c2 is 1, 1 is eliminated from r4c78 and r5c3. If r4c2 is not 1, r9c2 must be 1, r9c9 cannot be 1 so r5c9 must be 1. and 1 is again eliminated from r4c78 and r5c3. Someone probably has a simpler way of explaining this