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At 19:00, the 7s were locked in Col 9 of Block 6 and Col 8 of Block 9, thus the 7s were locked into Col 7 of Block 3, therefore r3c8 can only be an 8. That gives you the 8 in Block 9 and the 7,8 pair and the 2 in Block 6.
I got stuck halfway but then managed it. 13 mins. notation free.
No pencil marks. Spent some enjoyable tens of minutes.
At 19:00, the 7s were locked in Col 9 of Block 6 and Col 8 of Block 9, thus the 7s were locked into Col 7 of Block 3, therefore r3c8 can only be an 8. That gives you the 8 in Block 9 and the 7,8 pair and the 2 in Block 6.
I got stuck halfway but then managed it. 13 mins. notation free.
No pencil marks. Spent some enjoyable tens of minutes.