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PostPosted: Wed Nov 25, 2009 8:52 pm 
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Grand Master
Grand Master
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Joined: Mon Apr 21, 2008 10:32 am
Posts: 868
All sudoku puzzles in this forum post are the intellectual property of Børge Alexander Tetlie Anderssen.
Copyright © 2009 Børge Alexander Tetlie Anderssen. All rights reserved. Terms of Use.


There are three difficulties to choose from.
All three puzzles have the same solution.
The difficulty levels explained     The ratings explained

A) Novice.
B) Apprentice (mainstream edition).
C) Grand Master (84 Intersection, 7 Naked Pair, 5 Naked Triplet, 1 Naked Quad, 1 Hidden Pair,
3 XY-Wing: one on 8 with pivot {46} in g10, one on 8 with pivot {47} in g6 and one on 2 with pivot {49} in g7, 2 Skyscraper: one on 5 in g8 and one on 7 in g8). Select to view details.
The advanced techniques are needed in 4 different grids.



Regular Clueless Explosion #67A (Novice)

Rating based on required solving techniques:  Moderate

Image

000000000007000000005000820090007001000001000000309608200000000000000100510073000
040000000000003006000800005000000002900200100000001300000000000300600000809020050
000700000002000001007050009000208000300000000004000000000000038000006000060092070
000098000200000005010020000650000000000200000000900160007000900000004000008000400
073000000000006009060000400000000040007300000000080007200000000001008000500604008
000040090000001007060000000005008016000003000006070900000000000000102004003900068
000000070000000004093501000000020090600000000340000007008002000000003000900000130
000060000000900000001004020000400002800000000009306400070009100000001008200600300
000047000002000000830000090000000006000000009050030070000900300003600001005001002



Regular Clueless Explosion #67B (Apprentice)

Rating based on required solving techniques:  Hard

Image

000000000007200000005000820090007001000001000000309608200000000000000100510073000
040000000000003006000800005000000002900200100000001300000030000300600000809020050
000700000002000001007050009000208000300000000004000000000000038000006000060092070
000008000200000005010020000050000000000200000000900160007000950000004000008000400
073000000000006009060000400000000040007300000000080007200000100001008000500604008
000040090000001007060000000005008016000003000006070900000000000000102004003900068
000000070000000004093501000000020000600100000340000007008002000000003000900000100
000060030000900000001004020000400002800000000009306400070009100000001008200600300
000047000002000000830000090000000006000000009050030070000900000000600001005001002



Regular Clueless Explosion 67C (Grand Master)

Rating based on required solving techniques:  Super Hard

Image

000000000007000000005000820090007001000001000000309608200000000000000100510073000
040000000000003006000800005000000002900200100000001300000000000300600000809020050
000700000002000001007050009000208000300000000004000000000000038000006000060092070
000008000200000005010020000050000000000200000000900160007000950000004000008000400
073000000000006009060000400000000040007300000000080007200000100001008000500604008
000000090000001007060000000005008016000003000006070900000000000000102004003900068
000000070000000004093501000000020090600000000340000007008002000000003000900000100
000060000600900000001004020000400002800000000000306400070009100000001008200600300
000047000002000000830000090000000006000000009050030070000900000000600001005001002

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