PlaySudoku.us
Medium · Puzzle #170
1
9
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7
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7
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5
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9
7
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5
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9
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1
"Invention is the most important product of man's creative brain. The ultimate purpose is the complete mastery of mind over the material world." — Nikola Tesla
"Invention is the most important product of man's creative brain. The ultimate purpose is the complete mastery of mind over the material world." — Nikola Tesla
Before using pencil marks, see how far you can get with pure logic and mental candidate tracking.
Before using pencil marks, see how far you can get with pure logic and mental candidate tracking.