Solution to Sudoku no 494

Sudoku no 494 (Extreme)

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Solution to Sudoku no 493

Sudoku no 493 (Extreme)

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Solution to Sudoku no 492

Sudoku no 492 (Easy)

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Solution to Sudoku no 491

Sudoku no 491 (Extreme)

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Solution to Sudoku no 490

Sudoku no 490 (Tough)

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Solution to Sudoku no 489

Sudoku no 489 (Tough)

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Solution to Sudoku no 488

Sudoku no 488 (Easy)

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Solution to Sudoku no 487

Sudoku no 487 (Extreme)

Andrew Stuart's site graded this puzzle as Extreme / 1267.
Hodoku gave it a grade of Extreme / 8560:

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Solution to Sudoku no 486

Sudoku no 486 (Extreme)

Andrews Stuart's site graded this sudoku puzzle as Extreme / 612.
Hodoku gave it a grade of Extreme / 5564:

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