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- Puzzle string 9:a__ab_4aa__a_6a_5aa_a_aa_c_6aa_4bacaa_a4_aa_4a_3a__a_3a__a__a__a3__a__b_a__a_,m72s2s2a11a15a12m21d2s1m24d3s1s2a14d2s1a11a8s2a13m6a7m504m40a9d3m144m6s1m1344s3s1s1m162a6
- Time taken 7144655 ms
- Max difficulty: 5.2; total difficulty: 821.9
- 0: Filled in initial combinations & candidates
- 1: (1.5) Pointing candidates: all combinations for cage 33 contain 3r9,6r9,9r9; eliminations in r9c1, r9c7, r9c8, r9c9
- 2: (3.2) Region sum: Row 9 must sum to 45; cages 29, 31's cells within this region must sum to 21; cages 29, 31 reduced from 120, 11 combinations to 108, 10
- 3: (4) Cage comparison: cages 9, 31 interact such that cage 31 has incongruous combinations; reduced from 10 to 9 combinations
- 4: (4) Cage comparison: cages 9, 0 interact such that cage 0 has incongruous combinations; reduced from 20 to 16 combinations
- 5: (4) Cage comparison: cages 20, 12 interact such that cage 12 has incongruous combinations; reduced from 14 to 12 combinations
- 6: (4) Cage comparison: cages 20, 28 interact such that cage 28 has incongruous combinations; reduced from 16 to 14 combinations
- 7: (4) Cage comparison: cages 27, 11 interact such that cage 11 has incongruous combinations; reduced from 16 to 14 combinations
- 8: (4) Cage comparison: cages 34, 29 interact such that cage 29 has incongruous combinations; reduced from 108 to 96 combinations
- 9: (4) Cage comparison: cages 25, 24 interact such that cage 24 has incongruous combinations; reduced from 8 to 6 combinations
- 10: (4.2) Cage comparison: cages 9, 17, 31 interact such that cage 31 has incongruous combinations; reduced from 9 to 8 combinations
- 11: (4.2) Cage comparison: cages 9, 31, 0 interact such that cage 31 has incongruous combinations; reduced from 8 to 7 combinations
- 12: (4.2) Cage comparison: cages 20, 12, 28 interact such that cage 28 has incongruous combinations; reduced from 14 to 12 combinations
- 13: (4.2) Cage comparison: cages 19, 21, 18 interact such that cage 18 has incongruous combinations; reduced from 14 to 12 combinations
- 14: (4.2) Cage comparison: cages 3, 0, 4 interact such that cage 0 has incongruous combinations; reduced from 16 to 14 combinations
- 15: (4.4) Cage comparison: cages 9, 5, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 80 to 77 combinations
- 16: (4.4) Cage comparison: cages 9, 17, 31, 0 interact such that cage 0 has incongruous combinations; reduced from 14 to 10 combinations
- 17: (4.4) Cage comparison: cages 9, 17, 31, 22 interact such that cage 22 has incongruous combinations; reduced from 77 to 69 combinations
- 18: (4.4) Cage comparison: cages 20, 17, 21, 18 interact such that cage 18 has incongruous combinations; reduced from 12 to 10 combinations
- 19: (4.2) Cage comparison: cages 19, 21, 18 interact such that cage 19 has incongruous combinations; reduced from 6 to 4 combinations
- 20: (4.4) Cage comparison: cages 19, 17, 21, 18 interact such that cage 17 has incongruous combinations; reduced from 6 to 5 combinations
- 21: (4.4) Cage comparison: cages 19, 21, 18, 15 interact such that cage 15 has incongruous combinations; reduced from 16 to 14 combinations
- 22: (4.4) Cage comparison: cages 20, 17, 24, 23 interact such that cage 23 has incongruous combinations; reduced from 12 to 10 combinations
- 23: (4.4) Cage comparison: cages 5, 33, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 69 to 65 combinations
- 24: (4.4) Cage comparison: cages 3, 0, 1, 4 interact such that cage 1 has incongruous combinations; reduced from 14 to 12 combinations
- 25: (4.4) Cage comparison: cages 3, 0, 2, 4 interact such that cage 2 has incongruous combinations; reduced from 14 to 12 combinations
- 26: (4.6) Cage comparison: cages 9, 17, 24, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 65 to 61 combinations
- 27: (4.6) Cage comparison: cages 9, 17, 31, 0, 22 interact such that cages 31, 22 have incongruous combinations; reduced from 7, 61 to 6, 54 combinations respectively
- 28: (4.2) Cage comparison: cages 34, 31, 29 interact such that cage 29 has incongruous combinations; reduced from 96 to 90 combinations
- 29: (4.6) Cage comparison: cages 9, 5, 31, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 54 to 50 combinations
- 30: (4.6) Cage comparison: cages 9, 5, 33, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 50 to 48 combinations
- 31: (4.6) Cage comparison: cages 13, 21, 25, 14, 29 interact such that cage 29 has incongruous combinations; reduced from 90 to 86 combinations
- 32: (4.6) Cage comparison: cages 13, 21, 25, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 48 to 47 combinations
- 33: (4.6) Cage comparison: cages 13, 25, 14, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 47 to 46 combinations
- 34: (4.6) Cage comparison: cages 20, 17, 24, 25, 23 interact such that cages 25, 23 have incongruous combinations; reduced from 6, 10 to 4, 8 combinations respectively
- 35: (4.6) Cage comparison: cages 20, 17, 24, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 48 to 43 combinations
- 36: (4.6) Cage comparison: cages 25, 17, 24, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 43 to 34 combinations
- 37: (4.6) Cage comparison: cages 25, 21, 14, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 86 to 82 combinations
- 38: (4.6) Cage comparison: cages 10, 33, 23, 18, 1 interact such that cage 18 has incongruous combinations; reduced from 10 to 9 combinations
- 39: (4.6) Cage comparison: cages 13, 25, 21, 8, 29 interact such that cage 8 has incongruous combinations; reduced from 16 to 15 combinations
- 40: (4.6) Cage comparison: cages 13, 25, 21, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 46 to 44 combinations
- 41: (4.6) Cage comparison: cages 13, 25, 14, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 82 to 74 combinations
- 42: (4.6) Cage comparison: cages 20, 25, 24, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 34 to 32 combinations
- 43: (4.8) Cage comparison: cages 9, 17, 5, 31, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 32 to 31 combinations
- 44: (4.8) Cage comparison: cages 9, 17, 24, 31, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 31 to 30 combinations
- 45: (4.8) Cage comparison: cages 9, 17, 24, 23, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 30 to 28 combinations
- 46: (4.8) Cage comparison: cages 9, 5, 33, 0, 15, 22 interact such that cage 15 has incongruous combinations; reduced from 14 to 12 combinations
- 47: (4.8) Cage comparison: cages 13, 20, 25, 21, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 44 to 43 combinations
- 48: (4.8) Cage comparison: cages 13, 20, 25, 24, 23, 29 interact such that cage 29 has incongruous combinations; reduced from 74 to 66 combinations
- 49: (4.8) Cage comparison: cages 13, 25, 21, 14, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 43 to 42 combinations
- 50: (4.8) Cage comparison: cages 13, 25, 14, 30, 8, 29 interact such that cage 8 has incongruous combinations; reduced from 15 to 14 combinations
- 51: (4.8) Cage comparison: cages 13, 25, 14, 30, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 42 to 38 combinations
- 52: (4.8) Cage comparison: cages 13, 21, 14, 8, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 38 to 37 combinations
- 53: (4.8) Cage comparison: cages 20, 25, 17, 24, 23, 22 interact such that cage 22 has incongruous combinations; reduced from 28 to 21 combinations
- 54: (4.8) Cage comparison: cages 20, 17, 21, 24, 23, 18 interact such that cage 18 has incongruous combinations; reduced from 9 to 7 combinations
- 55: (4.2) Cage comparison: cages 19, 18, 15 interact such that cage 15 has incongruous combinations; reduced from 12 to 11 combinations
- 56: (4.6) Cage comparison: cages 10, 33, 18, 1, 22 interact such that cages 33, 22 have incongruous combinations; reduced from 6, 21 to 5, 20 combinations respectively
- 57: (4.6) Cage comparison: cages 33, 5, 0, 15, 22 interact such that cage 22 has incongruous combinations; reduced from 20 to 19 combinations
- 58: (5) Cage comparison: cages 9, 13, 25, 31, 14, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 66 to 64 combinations
- 59: (5) Cage comparison: cages 9, 13, 6, 10, 14, 16, 12 interact such that cage 14 has incongruous combinations; reduced from 8 to 7 combinations
- 60: (5) Cage comparison: cages 9, 13, 6, 10, 16, 12, 11 interact such that cage 11 has incongruous combinations; reduced from 14 to 13 combinations
- 61: (5) Cage comparison: cages 9, 17, 33, 5, 31, 0, 22 interact such that cage 22 has incongruous combinations; reduced from 19 to 18 combinations
- 62: (5) Cage comparison: cages 9, 17, 5, 31, 0, 15, 22 interact such that cage 22 has incongruous combinations; reduced from 18 to 17 combinations
- 63: (4.8) Cage comparison: cages 33, 5, 0, 15, 32, 22 interact such that cage 32 has incongruous combinations; reduced from 16 to 14 combinations
- 64: (5) Cage comparison: cages 9, 17, 24, 31, 23, 0, 22 interact such that cages 17, 22 have incongruous combinations; reduced from 5, 17 to 4, 14 combinations respectively
- 65: (4.8) Cage comparison: cages 33, 5, 10, 1, 22, 32 interact such that cage 32 has incongruous combinations; reduced from 14 to 13 combinations
- 66: (5) Cage comparison: cages 13, 17, 25, 21, 24, 23, 29 interact such that cage 21 has incongruous combinations; reduced from 6 to 5 combinations
- 67: (5) Cage comparison: cages 13, 17, 25, 24, 23, 22, 29 interact such that cage 29 has incongruous combinations; reduced from 64 to 63 combinations
- 68: (5) Cage comparison: cages 13, 20, 25, 21, 14, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 37 to 36 combinations
- 69: (5) Cage comparison: cages 13, 20, 25, 24, 23, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 36 to 35 combinations
- 70: (5) Cage comparison: cages 13, 25, 21, 14, 30, 8, 29 interact such that cages 21, 29 have incongruous combinations; reduced from 5, 63 to 4, 48 combinations respectively
- 71: (5) Cage comparison: cages 13, 21, 14, 30, 8, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 35 to 34 combinations
- 72: (5) Cage comparison: cages 17, 20, 21, 25, 24, 18, 23 interact such that cage 18 has incongruous combinations; reduced from 7 to 6 combinations
- 73: (5) Cage comparison: cages 19, 33, 5, 18, 0, 15, 22 interact such that cage 15 has incongruous combinations; reduced from 11 to 10 combinations
- 74: (5) Cage comparison: cages 27, 34, 31, 30, 32, 26, 29 interact such that cage 29 has incongruous combinations; reduced from 48 to 46 combinations
- 75: (5) Cage comparison: cages 27, 34, 31, 32, 22, 26, 29 interact such that cage 29 has incongruous combinations; reduced from 46 to 42 combinations
- 76: (5) Cage comparison: cages 27, 31, 28, 30, 32, 26, 29 interact such that cage 26 has incongruous combinations; reduced from 14 to 12 combinations
- 77: (4.8) Cage comparison: cages 27, 26, 30, 32, 22, 29 interact such that cage 29 has incongruous combinations; reduced from 42 to 41 combinations
- 78: (5) Cage comparison: cages 27, 26, 28, 30, 32, 22, 29 interact such that cages 30, 29 have incongruous combinations; reduced from 12, 41 to 11, 38 combinations respectively
- 79: (5) Cage comparison: cages 34, 31, 30, 26, 28, 32, 29 interact such that cage 29 has incongruous combinations; reduced from 38 to 36 combinations
- 80: (5) Cage comparison: cages 33, 10, 18, 1, 26, 32, 22 interact such that cage 32 has incongruous combinations; reduced from 13 to 12 combinations
- 81: (5) Cage comparison: cages 5, 6, 3, 0, 1, 2, 4 interact such that cage 0 has incongruous combinations; reduced from 10 to 9 combinations
- 82: (5) Cage comparison: cages 3, 7, 0, 1, 2, 8, 4 interact such that cage 0 has incongruous combinations; reduced from 9 to 8 combinations
- 83: (4.4) Cage comparison: cages 5, 0, 15, 22 interact such that cage 22 has incongruous combinations; reduced from 14 to 13 combinations
- 84: (5) Cage comparison: cages 9, 17, 27, 31, 0, 22, 29 interact such that cage 29 has incongruous combinations; reduced from 36 to 34 combinations
- 85: (5) Cage comparison: cages 9, 17, 34, 31, 0, 8, 29 interact such that cage 8 has incongruous combinations; reduced from 14 to 13 combinations
- 86: (5) Cage comparison: cages 9, 17, 33, 10, 0, 1, 22 interact such that cage 22 has incongruous combinations; reduced from 13 to 12 combinations
- 87: (4.8) Cage comparison: cages 17, 20, 21, 0, 15, 22 interact such that cage 15 has incongruous combinations; reduced from 10 to 9 combinations
- 88: (5) Cage comparison: cages 13, 21, 25, 14, 30, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 34 to 33 combinations
- 89: (5) Cage comparison: cages 17, 20, 21, 34, 31, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 33 to 32 combinations
- 90: (5) Cage comparison: cages 21, 25, 14, 30, 8, 4, 29 interact such that cages 4, 29 have incongruous combinations; reduced from 32, 34 to 29, 30 combinations respectively
- 91: (5) Cage comparison: cages 27, 34, 6, 26, 28, 32, 29 interact such that cage 26 has incongruous combinations; reduced from 12 to 11 combinations
- 92: (5) Cage comparison: cages 27, 34, 31, 26, 28, 32, 29 interact such that cage 26 has incongruous combinations; reduced from 11 to 10 combinations
- 93: (4.8) Cage comparison: cages 5, 0, 15, 26, 22, 32 interact such that cage 32 has incongruous combinations; reduced from 12 to 11 combinations
- 94: (5) Cage comparison: cages 27, 31, 26, 30, 32, 22, 29 interact such that cage 30 has incongruous combinations; reduced from 11 to 10 combinations
- 95: (4.8) Cage comparison: cages 13, 25, 14, 30, 8, 29 interact such that cage 8 has incongruous combinations; reduced from 13 to 12 combinations
- 96: (4.8) Cage comparison: cages 13, 25, 14, 30, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 29 to 27 combinations
- 97: (5) Cage comparison: cages 27, 31, 26, 30, 32, 28, 29 interact such that cage 32 has incongruous combinations; reduced from 11 to 10 combinations
- 98: (5) Cage comparison: cages 27, 31, 26, 32, 22, 28, 29 interact such that cage 29 has incongruous combinations; reduced from 30 to 29 combinations
- 99: (4.8) Cage comparison: cages 21, 25, 14, 30, 8, 29 interact such that cage 30 has incongruous combinations; reduced from 10 to 9 combinations
- 100: (5) Cage comparison: cages 27, 23, 30, 26, 22, 28, 29 interact such that cage 29 has incongruous combinations; reduced from 29 to 28 combinations
- 101: (5) Cage comparison: cages 33, 5, 10, 18, 15, 1, 22 interact such that cage 15 has incongruous combinations; reduced from 9 to 8 combinations
- 102: (5) Cage comparison: cages 9, 17, 33, 5, 0, 15, 22 interact such that cage 33 has incongruous combinations; reduced from 5 to 4 combinations
- 103: (5) Cage comparison: cages 20, 21, 25, 14, 30, 4, 29 interact such that cage 29 has incongruous combinations; reduced from 28 to 27 combinations
- 104: (5) Cage comparison: cages 21, 25, 14, 30, 8, 4, 29 interact such that cages 4, 29 have incongruous combinations; reduced from 27, 27 to 20, 26 combinations respectively
- 105: (5) Cage comparison: cages 27, 34, 31, 30, 26, 32, 29 interact such that cage 26 has incongruous combinations; reduced from 10 to 9 combinations
- 106: (5) Cage comparison: cages 13, 21, 25, 14, 8, 4, 29 interact such that cage 29 has incongruous combinations; reduced from 26 to 24 combinations
- 107: (5.2) Cage comparison: cages 9, 13, 10, 14, 15, 16, 12, 11 interact such that cage 10 has incongruous combinations; reduced from 6 to 5 combinations
- 108: (4.6) Cage comparison: cages 33, 10, 5, 15, 22 interact such that cage 22 has incongruous combinations; reduced from 12 to 9 combinations
- 109: (4.6) Cage comparison: cages 20, 25, 24, 23, 22 interact such that cage 23 has incongruous combinations; reduced from 8 to 7 combinations
- 110: (4.6) Cage comparison: cages 21, 14, 22, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 24 to 23 combinations
- 111: (4.8) Cage comparison: cages 20, 25, 24, 23, 22, 28 interact such that cage 28 has incongruous combinations; reduced from 12 to 11 combinations
- 112: (4.8) Cage comparison: cages 20, 22, 26, 30, 28, 29 interact such that cage 29 has incongruous combinations; reduced from 23 to 22 combinations
- 113: (4.8) Cage comparison: cages 27, 5, 23, 15, 22, 32 interact such that cage 23 has incongruous combinations; reduced from 7 to 6 combinations
- 114: (4.8) Cage comparison: cages 27, 23, 24, 22, 28, 29 interact such that cage 28 has incongruous combinations; reduced from 11 to 10 combinations
- 115: (5) Cage comparison: cages 9, 10, 31, 14, 22, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 22 to 21 combinations
- 116: (5) Cage comparison: cages 17, 19, 20, 21, 18, 23, 24 interact such that cage 18 has incongruous combinations; reduced from 6 to 5 combinations
- 117: (5) Cage comparison: cages 17, 20, 21, 25, 23, 24, 22 interact such that cage 21 has incongruous combinations; reduced from 4 to 3 combinations
- 118: (4) Cage comparison: cages 21, 29 interact such that cage 29 has incongruous combinations; reduced from 21 to 20 combinations
- 119: (4.2) Cage comparison: cages 21, 19, 18 interact such that cage 18 has incongruous combinations; reduced from 5 to 4 combinations
- 120: (4.2) Cage comparison: cages 21, 19, 15 interact such that cage 15 has incongruous combinations; reduced from 8 to 7 combinations
- 121: (4.2) Cage comparison: cages 18, 19, 15 interact such that cage 15 has incongruous combinations; reduced from 7 to 6 combinations
- 122: (4.4) Cage comparison: cages 21, 25, 14, 8 interact such that cage 8 has incongruous combinations; reduced from 12 to 11 combinations
- 123: (4.4) Cage comparison: cages 21, 25, 14, 29 interact such that cage 29 has incongruous combinations; reduced from 20 to 17 combinations
- 124: (4.4) Cage comparison: cages 13, 20, 29, 4 interact such that cage 4 has incongruous combinations; reduced from 20 to 19 combinations
- 125: (4.4) Cage comparison: cages 33, 5, 15, 22 interact such that cage 22 has incongruous combinations; reduced from 9 to 8 combinations
- 126: (4) Cage comparison: cages 0, 22 interact such that cage 0 has incongruous combinations; reduced from 8 to 7 combinations
- 127: (4.6) Cage comparison: cages 21, 25, 14, 30, 8 interact such that cage 8 has incongruous combinations; reduced from 11 to 10 combinations
- 128: (4.8) Cage comparison: cages 21, 9, 31, 0, 29, 4 interact such that cage 31 has incongruous combinations; reduced from 6 to 5 combinations
- 129: (1.5) Claiming candidates: cage 29 must contain 7 in r9c7, r9c8, r9c9: from 17 combinations to 16
- 130: (4.8) Cage comparison: cages 9, 10, 31, 14, 30, 29 interact such that cage 30 has incongruous combinations; reduced from 9 to 8 combinations
- 131: (4.8) Cage comparison: cages 17, 20, 25, 23, 24, 22 interact such that cage 20 has incongruous combinations; reduced from 4 to 3 combinations
- 132: (4.6) Cage comparison: cages 20, 25, 14, 30, 4 interact such that cage 4 has incongruous combinations; reduced from 19 to 18 combinations
- 133: (4.8) Cage comparison: cages 20, 21, 25, 14, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 16 to 15 combinations
- 134: (4.8) Cage comparison: cages 20, 25, 23, 24, 22, 29 interact such that cage 29 has incongruous combinations; reduced from 15 to 14 combinations
- 135: (4.6) Cage comparison: cages 25, 14, 30, 8, 29 interact such that cage 8 has incongruous combinations; reduced from 10 to 9 combinations
- 136: (4.8) Cage comparison: cages 20, 21, 14, 30, 29, 4 interact such that cage 4 has incongruous combinations; reduced from 18 to 17 combinations
- 137: (4.8) Cage comparison: cages 21, 9, 17, 34, 31, 29 interact such that cage 21 has incongruous combinations; reduced from 3 to 2 combinations
- 138: (4.6) Cage comparison: cages 21, 25, 14, 30, 4 interact such that cage 4 has incongruous combinations; reduced from 17 to 16 combinations
- 139: (4.8) Cage comparison: cages 21, 20, 25, 14, 30, 4 interact such that cage 4 has incongruous combinations; reduced from 16 to 15 combinations
- 140: (4.8) Cage comparison: cages 21, 20, 14, 30, 29, 4 interact such that cage 4 has incongruous combinations; reduced from 15 to 14 combinations
- 141: (4.8) Cage comparison: cages 21, 9, 31, 0, 4, 29 interact such that cages 31, 29 have incongruous combinations; reduced from 5, 14 to 4, 13 combinations respectively
- 142: (4.6) Cage comparison: cages 17, 31, 23, 24, 22 interact such that cage 22 has incongruous combinations; reduced from 8 to 7 combinations
- 143: (1.5) Pointing candidates: all combinations for cage 22 contain 7r7; eliminations in r7c7, r7c9
- 144: (4.4) Cage comparison: cages 25, 23, 24, 22 interact such that cages 23, 24 have incongruous combinations; reduced from 6, 6 to 5, 4 combinations respectively
- 145: (4.8) Cage comparison: cages 21, 13, 30, 8, 29, 4 interact such that cage 4 has incongruous combinations; reduced from 14 to 13 combinations
- 146: (4.2) Cage comparison: cages 0, 3, 4 interact such that cage 3 has incongruous combinations; reduced from 8 to 6 combinations
- 147: (4.8) Cage comparison: cages 21, 17, 25, 31, 34, 29 interact such that cage 17 has incongruous combinations; reduced from 4 to 3 combinations
- 148: (4.2) Cage comparison: cages 17, 31, 0 interact such that cage 0 has incongruous combinations; reduced from 7 to 6 combinations
- 149: (3.6) Region sum: Col 1 must sum to 45; cages 9, 31, 0, 22's cells within this region must sum to 37; cages 31 reduced from 4 combinations to 2
- 150: (3.2) Region sum: Row 9 must sum to 45; cages 29, 31's cells within this region must sum to 21; cages 29 reduced from 13 combinations to 12
- 151: (4) Cage comparison: cages 13, 29 interact such that cage 13 has incongruous combinations; reduced from 4 to 2 combinations
- 152: (1.5) Pointing candidates: all combinations for cage 13 contain 5c8,9c8; eliminations in r2c8, r6c8
- 153: (4.4) Cage comparison: cages 31, 27, 34, 29 interact such that cage 27 has incongruous combinations; reduced from 4 to 3 combinations
- 154: (4.4) Cage comparison: cages 31, 34, 32, 29 interact such that cage 32 has incongruous combinations; reduced from 10 to 7 combinations
- 155: (4.4) Cage comparison: cages 17, 20, 24, 23 interact such that cage 20 has incongruous combinations; reduced from 3 to 2 combinations
- 156: (4.2) Cage comparison: cages 20, 25, 4 interact such that cage 4 has incongruous combinations; reduced from 13 to 12 combinations
- 157: (4.4) Cage comparison: cages 25, 24, 23, 29 interact such that cage 23 has incongruous combinations; reduced from 5 to 3 combinations
- 158: (1.5) Pointing candidates: all combinations for cage 23 contain 5c4; eliminations in r1c4, r2c4, r4c4
- 159: (4.4) Cage comparison: cages 23, 27, 22, 30 interact such that cage 30 has incongruous combinations; reduced from 7 to 6 combinations
- 160: (4.4) Cage comparison: cages 23, 27, 22, 26 interact such that cage 26 has incongruous combinations; reduced from 9 to 7 combinations
- 161: (4.4) Cage comparison: cages 30, 26, 32, 29 interact such that cage 30 has incongruous combinations; reduced from 6 to 5 combinations
- 162: (4.6) Cage comparison: cages 20, 21, 25, 30, 14 interact such that cage 25 has incongruous combinations; reduced from 3 to 2 combinations
- 163: (4.4) Cage comparison: cages 21, 25, 4, 29 interact such that cage 29 has incongruous combinations; reduced from 12 to 10 combinations
- 164: (4.6) Cage comparison: cages 20, 21, 25, 28, 4 interact such that cage 28 has incongruous combinations; reduced from 9 to 8 combinations
- 165: (4.6) Cage comparison: cages 21, 25, 15, 22, 29 interact such that cage 15 has incongruous combinations; reduced from 6 to 5 combinations
- 166: (4.6) Cage comparison: cages 21, 27, 19, 30, 26 interact such that cage 30 has incongruous combinations; reduced from 5 to 4 combinations
- 167: (4.2) Cage comparison: cages 21, 30, 29 interact such that cage 29 has incongruous combinations; reduced from 10 to 9 combinations
- 168: (4.6) Cage comparison: cages 21, 25, 30, 29, 4 interact such that cage 4 has incongruous combinations; reduced from 12 to 11 combinations
- 169: (4.6) Cage comparison: cages 21, 30, 14, 8, 29 interact such that cages 14, 8 have incongruous combinations; reduced from 7, 8 to 6, 7 combinations respectively
- 170: (4.2) Cage comparison: cages 30, 14, 4 interact such that cage 4 has incongruous combinations; reduced from 11 to 9 combinations
- 171: (4.4) Cage comparison: cages 30, 14, 4, 29 interact such that cage 4 has incongruous combinations; reduced from 9 to 8 combinations
- 172: (4.6) Cage comparison: cages 20, 25, 4, 28, 29 interact such that cage 29 has incongruous combinations; reduced from 9 to 7 combinations
- 173: (4.4) Cage comparison: cages 31, 27, 29, 7 interact such that cage 7 has incongruous combinations; reduced from 8 to 7 combinations
- 174: (4.4) Cage comparison: cages 20, 25, 7, 8 interact such that cage 8 has incongruous combinations; reduced from 7 to 6 combinations
- 175: (4.4) Cage comparison: cages 20, 7, 28, 12 interact such that cage 12 has incongruous combinations; reduced from 12 to 8 combinations
- 176: (4.4) Cage comparison: cages 23, 30, 22, 29 interact such that cage 30 has incongruous combinations; reduced from 4 to 3 combinations
- 177: (4.4) Cage comparison: cages 27, 30, 26, 28 interact such that cage 28 has incongruous combinations; reduced from 8 to 7 combinations
- 178: (4.4) Cage comparison: cages 30, 8, 14, 29 interact such that cage 8 has incongruous combinations; reduced from 6 to 5 combinations
- 179: (4.4) Cage comparison: cages 30, 26, 28, 32 interact such that cage 28 has incongruous combinations; reduced from 7 to 6 combinations
- 180: (4.6) Cage comparison: cages 20, 25, 28, 4, 12 interact such that cage 4 has incongruous combinations; reduced from 8 to 7 combinations
- 181: (1) Hidden single: 1 in r7c8
- 182: (0) Naked single: 6 in r8c8
- 183: (0) Naked single: 1 in r8c1
- 184: (0) Naked single: 3 in r5c1
- 185: (0) Naked single: 2 in r5c8
- 186: (0) Naked single: 1 in r5c7
- 187: (0) Naked single: 6 in r6c7
- 188: (0) Naked single: 3 in r6c8
- 189: (0) Naked single: 9 in r6c9
- 190: (0) Naked single: 4 in r6c2
- 191: (0) Naked single: 5 in r7c4
- 192: (0) Naked single: 5 in r5c9
- 193: (0) Naked single: 4 in r7c9
- 194: (0) Naked single: 7 in r8c9
- 195: (0) Naked single: 8 in r9c9
- 196: (0) Naked single: 5 in r6c1
- 197: (0) Naked single: 2 in r9c1
- 198: (0) Naked single: 7 in r7c1
- 199: (1) Hidden single: 9 in r1c1
- 200: (1) Hidden single: 8 in r3c6
- 201: (1) Hidden single: 5 in r8c2
- 202: (0) Naked single: 8 in r4c2
- 203: (0) Naked single: 7 in r5c2
- 204: (0) Naked single: 4 in r8c3
- 205: (1) Hidden single: 5 in r2c3
- 206: (1) Hidden single: 8 in r2c1
- 207: (0) Naked single: 1 in r1c2
- 208: (0) Naked single: 8 in r2c1
- 209: (1) Hidden single: 2 in r7c2
- 210: (0) Naked single: 3 in r7c6
- 211: (0) Naked single: 2 in r8c6
- 212: (0) Naked single: 6 in r7c5
- 213: (0) Naked single: 2 in r6c5
- 214: (0) Naked single: 7 in r6c6
- 215: (0) Naked single: 9 in r4c6
- 216: (0) Naked single: 9 in r3c8
- 217: (0) Naked single: 9 in r2c2
- 218: (0) Naked single: 3 in r3c2
- 219: (0) Naked single: 3 in r2c5
- 220: (0) Naked single: 2 in r2c7
- 221: (0) Naked single: 3 in r1c9
- 222: (0) Naked single: 7 in r1c3
- 223: (0) Naked single: 5 in r1c5
- 224: (0) Naked single: 1 in r9c5
- 225: (0) Naked single: 1 in r3c4
- 226: (0) Naked single: 6 in r3c3
- 227: (0) Naked single: 4 in r3c1
- 228: (0) Naked single: 6 in r4c1
- 229: (0) Naked single: 8 in r5c3
- 230: (0) Naked single: 1 in r6c3
- 231: (0) Naked single: 8 in r6c4
- 232: (0) Naked single: 3 in r8c4
- 233: (0) Naked single: 6 in r9c2
- 234: (0) Naked single: 3 in r9c3
- 235: (0) Naked single: 9 in r9c4
- 236: (0) Naked single: 8 in r8c5
- 237: (0) Naked single: 8 in r7c7
- 238: (0) Naked single: 4 in r1c7
- 239: (0) Naked single: 4 in r2c4
- 240: (0) Naked single: 1 in r2c6
- 241: (0) Naked single: 7 in r2c8
- 242: (0) Naked single: 7 in r9c7
- 243: (0) Naked single: 5 in r3c7
- 244: (0) Naked single: 3 in r4c7
- 245: (0) Naked single: 4 in r9c8
- 246: (0) Naked single: 6 in r2c9
- 247: (0) Naked single: 7 in r4c4
- 248: (0) Naked single: 4 in r4c5
- 249: (0) Naked single: 9 in r5c5
- 250: (0) Naked single: 4 in r5c6
- 251: (0) Naked single: 8 in r1c8
- 252: (0) Naked single: 9 in r8c7
- 253: (0) Naked single: 6 in r5c4
- 254: (0) Naked single: 2 in r1c4
- 255: (0) Naked single: 2 in r4c3
- 256: (0) Naked single: 2 in r3c9
- 257: (0) Naked single: 1 in r4c9
- 258: (0) Naked single: 7 in r3c5
- 259: (0) Naked single: 5 in r9c6
- 260: (0) Naked single: 6 in r1c6
- 261: (0) Naked single: 5 in r4c8
- 262: (0) Naked single: 9 in r7c3
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