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train · 5k rows

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Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 1 4 2 4 2 3 1 1 4 . 3 2 3 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 1 4 1 4 3 2 4 3 2 1 . 1 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: A Sudoku column reads: 5 1 7 8 3 9 ? 6 4. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: the ...
Question: A Sudoku row reads: ? 7 8 9 3 1 2 6 4. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 6 7 8 9, which sum to 1 + 2 + 3 + 4 + 6 + 7 + 8 + 9 = 40. - 1 through 9 sum to 45, so the missing digit is 45 - 40 = 5. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 2 . 2 1 4 3 1 4 3 2 3 2 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku row reads: 3 ? 6 7 9 1 2 8 4. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 6 7 8 9, which sum to 1 + 2 + 3 + 4 + 6 + 7 + 8 + 9 = 40. - 1 through 9 sum to 45, so the missing digit is 45 - 40 = 5. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 2 1 2 1 4 3 3 2 1 4 1 4 3 . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 3 4 2 3 4 . 4 1 2 3 3 4 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku 3x3 box reads: 6 ? 5 4 2 8 3 7 1. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 7 8, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36. - 1 through 9 sum to 45, so the missing digit is 45 - 36 = 9. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 4 2 1 1 3 4 2 4 2 . 3 2 1 3 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 3 2 4 3 2 1 2 1 4 3 3 2 . . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r4c3: row has [2, 3], column has [2, 3, 4] -> only 1 fits. - Cell r4c4: row has [1, 2, 3], colum...
Question: A Sudoku column reads: 5 4 7 ? 2 8 9 1 6. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 4 5 6 7 8 9, which sum to 1 + 2 + 4 + 5 + 6 + 7 + 8 + 9 = 42. - 1 through 9 sum to 45, so the missing digit is 45 - 42 = 3. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 2 1 3 2 1 3 4 3 4 2 1 1 3 4 . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 4 1 . 1 3 2 2 4 1 3 1 . 2 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c1: row has [1, 2, 3], column has [1, 2, 3] -> only 4 fits. - Cell r4c2: row has [1, 2, 4], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 . 3 2 2 4 1 3 1 3 2 . 3 2 4 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [2, 3, 4], column has [2, 3, 4] -> only 1 fits. - Cell r3c4: row has [1, 2, 3], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 1 2 3 1 2 4 2 4 3 1 1 . 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 1 4 . 1 4 2 3 4 2 3 1 2 3 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 3 2 4 3 . 1 2 1 4 3 3 2 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 4 3 3 1 2 4 4 3 . 2 2 4 3 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku column reads: 5 2 1 7 9 4 ? 6 8. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 4 5 6 7 8 9, which sum to 1 + 2 + 4 + 5 + 6 + 7 + 8 + 9 = 42. - 1 through 9 sum to 45, so the missing digit is 45 - 42 = 3. - check: the ...
Question: A Sudoku row reads: 4 1 2 7 ? 8 3 5 9. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 7 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 7 + 8 + 9 = 39. - 1 through 9 sum to 45, so the missing digit is 45 - 39 = 6. - check: the full r...
Question: A Sudoku column reads: ? 5 2 7 6 4 9 8 3. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 2 3 4 5 6 7 8 9, which sum to 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44. - 1 through 9 sum to 45, so the missing digit is 45 - 44 = 1. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 . 3 4 2 3 1 2 3 1 4 3 1 4 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 1 4 1 . 3 . 2 1 4 3 4 3 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c2: row has [1, 3], column has [1, 2, 3] -> only 4 fits. - Cell r2c4: row has [1, 3, 4], colum...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 3 2 4 4 1 3 2 3 . 4 1 2 4 1 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 3 4 4 1 2 3 . 4 1 2 2 3 4 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 . 4 4 3 2 1 2 1 4 . 1 4 3 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c3: row has [2, 3, 4], column has [2, 3, 4] -> only 1 fits. - Cell r3c4: row has [1, 2, 4], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 4 3 2 4 3 1 3 1 2 . 4 3 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: A Sudoku row reads: 4 3 8 7 ? 6 2 5 9. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 2 3 4 5 6 7 8 9, which sum to 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44. - 1 through 9 sum to 45, so the missing digit is 45 - 44 = 1. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 . 1 2 . 4 3 1 4 . 2 3 2 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c3: row has [1, 3, 4], column has [1, 4] -> only 2 fits. - Cell r2c2: row has [2, 3, 4], colum...
Question: A Sudoku row reads: 8 6 5 3 9 4 ? 1 7. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 4 3 4 3 . 2 3 1 2 4 2 4 3 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 2 1 3 2 1 4 1 4 3 2 2 . 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku column reads: 6 4 2 3 9 7 8 ? 1. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 6 7 8 9, which sum to 1 + 2 + 3 + 4 + 6 + 7 + 8 + 9 = 40. - 1 through 9 sum to 45, so the missing digit is 45 - 40 = 5. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 4 1 4 1 3 2 1 . . 4 2 4 1 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r3c2: row has [1, 4], column has [1, 2, 4] -> only 3 fits. - Cell r3c3: row has [1, 3, 4], colum...
Question: A Sudoku column reads: 8 2 3 4 7 5 9 6 ?. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 2 3 4 5 6 7 8 9, which sum to 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44. - 1 through 9 sum to 45, so the missing digit is 45 - 44 = 1. - check: the ...
Question: A Sudoku row reads: 8 5 1 ? 3 6 4 7 9. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 . 3 1 4 3 1 2 3 1 2 4 . . 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 2, 3], column has [1, 3] -> only 4 fits. - Cell r4c1: row has [3, 4], column h...
Question: A Sudoku column reads: 1 7 3 6 4 ? 5 9 8. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: the ...
Question: A Sudoku column reads: 8 5 6 3 ? 4 9 1 2. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 = 38. - 1 through 9 sum to 45, so the missing digit is 45 - 38 = 7. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 3 4 . 1 2 3 4 4 1 2 3 3 4 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 . 2 1 3 2 1 4 1 4 3 2 2 . . 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 2, 4], column has [2, 4] -> only 3 fits. - Cell r4c2: row has [2, 3], column h...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 4 3 4 3 1 . 2 4 3 1 3 1 . 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c4: row has [1, 3, 4], column has [1, 3, 4] -> only 2 fits. - Cell r4c3: row has [1, 3, 4], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 2 1 3 1 . 4 2 3 4 2 1 2 1 3 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 . 1 2 2 4 . 1 3 1 2 4 1 2 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 2, 4], column has [1, 2, 4] -> only 3 fits. - Cell r2c3: row has [1, 2, 4], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 2 3 1 3 1 4 2 1 4 . 3 2 3 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 1 3 . 4 2 1 3 1 3 4 2 3 4 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 3 2 4 . 1 3 2 3 2 4 1 2 4 1 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 3 4 1 3 4 1 2 4 . 2 3 1 2 3 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 3 2 4 2 4 . 3 4 1 3 2 3 2 4 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 . 3 4 4 1 . 3 3 4 1 2 2 3 4 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 3, 4], column has [1, 3, 4] -> only 2 fits. - Cell r2c3: row has [1, 3, 4], co...
Question: A Sudoku column reads: 4 5 ? 7 1 2 3 9 8. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 7 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 7 + 8 + 9 = 39. - 1 through 9 sum to 45, so the missing digit is 45 - 39 = 6. - check: the ...
Question: A Sudoku 3x3 box reads: 7 3 ? 2 5 8 6 9 1. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 5 6 7 8 9, which sum to 1 + 2 + 3 + 5 + 6 + 7 + 8 + 9 = 41. - 1 through 9 sum to 45, so the missing digit is 45 - 41 = 4. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 4 3 1 1 2 4 . 3 1 2 4 4 3 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: A Sudoku column reads: 7 5 6 3 2 ? 8 4 9. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 2 3 4 5 6 7 8 9, which sum to 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44. - 1 through 9 sum to 45, so the missing digit is 45 - 44 = 1. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 3 2 4 2 4 1 3 3 . 4 1 4 1 3 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: A Sudoku row reads: 9 3 4 7 6 2 1 5 ?. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 7 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 7 + 9 = 37. - 1 through 9 sum to 45, so the missing digit is 45 - 37 = 8. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 4 3 . 2 2 4 3 1 3 1 2 4 1 2 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 1 4 3 . 3 2 1 3 2 1 . 1 4 3 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c1: row has [1, 2, 3], column has [1, 2, 3] -> only 4 fits. - Cell r3c4: row has [1, 2, 3], co...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 1 2 4 1 2 4 . 4 3 1 2 2 4 3 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 3 . 4 1 2 3 2 3 4 1 3 4 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): . 1 2 4 4 3 1 2 1 2 4 3 . 4 3 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c1: row has [1, 2, 4], column has [1, 4] -> only 3 fits. - Cell r4c1: row has [1, 3, 4], colum...
Question: A Sudoku 3x3 box reads: 4 5 7 1 ? 6 9 2 8. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 4 5 6 7 8 9, which sum to 1 + 2 + 4 + 5 + 6 + 7 + 8 + 9 = 42. - 1 through 9 sum to 45, so the missing digit is 45 - 42 = 3. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 1 3 4 1 3 4 2 4 2 1 . 3 4 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 . 4 3 4 1 2 4 1 2 3 . 3 4 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c3: row has [1, 2, 4], column has [1, 2, 4] -> only 3 fits. - Cell r4c1: row has [1, 3, 4], co...
Question: A Sudoku row reads: 8 3 4 5 7 6 9 ? 1. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 4 1 2 1 2 . 4 . 1 2 3 2 3 . 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c3: row has [1, 2, 4], column has [1, 2] -> only 3 fits. - Cell r3c1: row has [1, 2, 3], colum...
Question: A Sudoku 3x3 box reads: 5 2 1 3 6 7 8 4 ?. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 7 8, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36. - 1 through 9 sum to 45, so the missing digit is 45 - 36 = 9. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 . 3 1 4 3 1 2 1 2 4 3 . 1 2 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 2, 3], column has [1, 2, 3] -> only 4 fits. - Cell r4c1: row has [1, 2, 4], co...
Question: A Sudoku 3x3 box reads: 7 9 ? 1 6 5 4 3 2. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 7 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 7 + 9 = 37. - 1 through 9 sum to 45, so the missing digit is 45 - 37 = 8. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 4 . 1 4 2 1 3 1 3 4 2 2 1 3 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 4 3 1 . 3 1 2 . 2 4 3 3 1 2 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c1: row has [1, 2, 3], column has [2, 3] -> only 4 fits. - Cell r3c1: row has [2, 3, 4], colum...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 1 4 2 . 4 3 4 3 2 1 1 4 3 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku row reads: 1 2 9 3 8 6 5 7 ?. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 5 6 7 8 9, which sum to 1 + 2 + 3 + 5 + 6 + 7 + 8 + 9 = 41. - 1 through 9 sum to 45, so the missing digit is 45 - 41 = 4. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 4 3 2 . 3 1 3 . 2 . 4 3 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c2: row has [1, 2, 3], column has [2, 3] -> only 4 fits. - Cell r3c2: row has [2, 3], column h...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): . 4 1 3 3 2 4 1 1 3 . 4 4 1 3 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c1: row has [1, 3, 4], column has [1, 3, 4] -> only 2 fits. - Cell r3c3: row has [1, 3, 4], co...
Question: A Sudoku 3x3 box reads: 3 1 ? 8 4 9 7 5 6. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 3 4 5 6 7 8 9, which sum to 1 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 43. - 1 through 9 sum to 45, so the missing digit is 45 - 43 = 2. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 1 4 . 1 4 3 1 4 3 2 4 3 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: A Sudoku row reads: 8 2 1 5 4 7 3 9 ?. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 7 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 7 + 8 + 9 = 39. - 1 through 9 sum to 45, so the missing digit is 45 - 39 = 6. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 2 1 4 1 4 3 2 2 1 . 3 4 3 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: A Sudoku 3x3 box reads: 9 8 1 2 7 6 5 ? 3. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 5 6 7 8 9, which sum to 1 + 2 + 3 + 5 + 6 + 7 + 8 + 9 = 41. - 1 through 9 sum to 45, so the missing digit is 45 - 41 = 4. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 . 1 4 1 . 3 2 2 1 4 3 . 3 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c2: row has [1, 3, 4], column has [1, 3] -> only 2 fits. - Cell r2c2: row has [1, 2, 3], colum...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 2 3 4 2 3 4 1 . 1 2 3 3 4 1 2 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r3 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 3 2 3 2 1 4 4 3 2 1 . 1 4 3 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 3 + 4 = 8. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 8 = 2. - check: col...
Question: A Sudoku column reads: 6 5 2 4 8 1 3 ? 9. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 = 38. - 1 through 9 sum to 45, so the missing digit is 45 - 38 = 7. - check: the ...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 1 3 . 1 3 4 2 4 2 1 3 3 4 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 2 + 3 = 6. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 6 = 4. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 3 2 3 2 1 4 2 1 4 3 4 . 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r4 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 . 4 3 3 2 1 4 1 4 3 2 4 3 2 1 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 3 . . 3 4 1 2 4 1 2 3 1 2 3 . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c3: row has [2, 3], column has [1, 2, 3] -> only 4 fits. - Cell r1c4: row has [2, 3, 4], colum...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 4 1 . 1 2 3 4 2 3 4 1 4 1 2 . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c4: row has [1, 3, 4], column has [1, 4] -> only 2 fits. - Cell r4c4: row has [1, 2, 4], colum...
Question: A Sudoku column reads: 1 3 4 2 ? 8 5 7 9. What digit goes in the ? cell? Let's think step by step. - The column must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 7 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 7 + 8 + 9 = 39. - 1 through 9 sum to 45, so the missing digit is 45 - 39 = 6. - check: the ...
Question: A Sudoku row reads: 4 7 ? 2 9 8 5 6 3. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 2 3 4 5 6 7 8 9, which sum to 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 44. - 1 through 9 sum to 45, so the missing digit is 45 - 44 = 1. - check: the full r...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 3 1 2 4 1 . 4 3 4 3 1 2 2 4 3 . Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r2c2: row has [1, 3, 4], column has [1, 3, 4] -> only 2 fits. - Cell r4c4: row has [2, 3, 4], co...
Question: A Sudoku 3x3 box reads: 9 8 3 1 7 2 5 4 ?. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 7 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 7 + 8 + 9 = 39. - 1 through 9 sum to 45, so the missing digit is 45 - 39 = 6. - check: th...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 1 4 2 . 3 1 4 2 4 2 3 1 2 3 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r1 contains 1 + 2 + 4 = 7. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 7 = 3. - check: col...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): . 4 . 2 2 3 4 1 4 1 2 3 1 2 3 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Cell r1c1: row has [2, 4], column has [1, 2, 4] -> only 3 fits. - Cell r1c3: row has [2, 3, 4], colum...
Question: Fill the missing cells in this 4x4 Sudoku (rows and columns each contain 1-4 once): 2 1 4 3 . 4 3 2 4 3 2 1 3 2 1 4 Let's think step by step. - Each row and each column must contain 1, 2, 3, 4 exactly once. - Row r2 contains 2 + 3 + 4 = 9. - 1 + 2 + 3 + 4 = 10, so the missing digit is 10 - 9 = 1. - check: col...
Question: A Sudoku 3x3 box reads: 8 3 2 6 1 9 ? 4 5. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 = 38. - 1 through 9 sum to 45, so the missing digit is 45 - 38 = 7. - check: th...
Question: A Sudoku 3x3 box reads: 9 2 6 3 4 ? 8 5 1. What digit goes in the ? cell? Let's think step by step. - The 3x3 box must contain each of 1-9 exactly once. - Present digits: 1 2 3 4 5 6 8 9, which sum to 1 + 2 + 3 + 4 + 5 + 6 + 8 + 9 = 38. - 1 through 9 sum to 45, so the missing digit is 45 - 38 = 7. - check: th...
Question: A Sudoku row reads: 9 1 7 8 6 2 ? 3 5. What digit goes in the ? cell? Let's think step by step. - The row must contain each of 1-9 exactly once. - Present digits: 1 2 3 5 6 7 8 9, which sum to 1 + 2 + 3 + 5 + 6 + 7 + 8 + 9 = 41. - 1 through 9 sum to 45, so the missing digit is 45 - 41 = 4. - check: the full r...

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