Claude Sonnet 5.5 on Expert grid 4
Solved: 57 of 57 blank cells right. It said it was 96% sure. All of Claude Sonnet 5.5's answers.
RESULTSolved
CELLS RIGHT57 / 57
SAID96% sure
MODEL TIME1.9 min
COST$0.171 (API-equivalent)
TOKENS IN / OUT910 / 16,706
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5 given 5 filled correctly 53 wrong, with the right digit 3 left empty
The end of its reply
I solved it by hand, using row, column and box eliminations, then testing one branch of a case split that reached a contradiction. I checked every row, every column and the columns 2–6 in full against the grid below. I did not separately check each 3x3 box against the final grid. <grid> 789316254 163524879 254897136 972685413 315742968 648139527 836451792 491273685 527968341 </grid> <confidence>96</confidence>
Grid expert-3 of set v1, 24 givens. Puzzle as one line: ..9.1625......4..9......1...72.....3.......6.6....9..7.3.......4...7.6855..9...4.