Sudoku S-T5
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: XY-wing ×3. Answer: S-T5 in the answer key.
Sudoku S-T6
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: Naked triple, X-wing, XY-wing. Answer: S-T6 in the answer key.
Sudoku S-T7
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: XY-wing ×3, X-wing. Answer: S-T7 in the answer key.
Sudoku S-T8
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: X-wing ×2, XY-wing ×2. Answer: S-T8 in the answer key.
Sudoku S-T9
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: XY-wing ×3, Hidden triple. Answer: S-T9 in the answer key.
Sudoku S-T10
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: X-wing ×2, XY-wing ×2. Answer: S-T10 in the answer key.
Sudoku S-T11
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: XY-wing ×4, Naked triple. Answer: S-T11 in the answer key.
Sudoku S-T12
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Needs at least one advanced step. For this one our solver needed: XY-wing ×6, X-wing. Answer: S-T12 in the answer key.
Sudoku, four per page
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Answers are in the answer key, by id.
Sudoku, four per page
Fill every empty square so that each row, each column and each 3×3 box holds the digits 1 to 9 once. Answers are in the answer key, by id.
Answers
Bold digits were printed on the puzzle; the lighter ones are the answer.
Answers
Bold digits were printed on the puzzle; the lighter ones are the answer.