There are four difficulties to choose from.
All four puzzles have the same solution.A) Novice.
B) Apprentice (mainstream edition).
C) Master (98 Intersections, 4 Naked Pairs, 3 Naked Triplets, 2 Naked Quads, 2 Hidden Pairs,
3 Skyscrapers in g10).
Select to view GRID numbers.D) Grand Master (92 Intersections, 4 Naked Pairs, 4 Naked Triplets, 1 Naked Quads,
3 Two String Kites: one in g2 and two in g10, 4 Finned X-Wing: one in g2,
one in g7,
one in g9 and one in g10).
Select to view GRID numbers.Two Finned X-Wing can easily be substituted with Empty Rectangles.Regular Clueless Explosion #20A (Novice)Rating based on required solving techniques: Moderate
000700040000000800204080010000059000000000400900004500000300000000000000096000002
000000000000001009890006304500000000000000000000090703009007052000504000400000000
000009060000000700010400800200000000000000000041005603020000000000100008630094005
009000020400009000005060400100000039004106000000790000000002006000000000021070300
090000800000000400600203001008000940000000000014930000007000084000600000006001000
000000007000000200000005000000070000000000001009150702000000000807000005001004603
000300070005000000004000800000028000002500100800003500000600000006000000000000306
000000000008009004205078900002000050600500000000306090500000020900000008000030007
009800000000300000000007005700030640100000800000080000006000200000000007370201050
Regular Clueless Explosion #20B (Apprentice)Rating based on required solving techniques: Moderate
000700000000000800204080010000059000000000400900004500000300000000000000096000002
000000000000001009890006304500000000000000000000090703009007052000504000400000000
000009060000000700010400800200000000000000000041005603000000000000100008630094005
009000020400009000005060400000000039004106000000700000000002006000000000021070300
090000800000000400600203001008000900000000300014930000007000004000600000000001000
000000007000000200000005000000070000000000001009150702000000000807000005001004603
000300070005000000004000800000028000002500100800003500000630005006000000000000306
000000000008009004205078900002000050600000000000306090500000020900000008000030007
009800000000300000000007005700030640100000800600080000006000200000000007370201050
Regular Clueless Explosion #20C (Master)Rating based on required solving techniques: Extra Hard
000700040000000800204080010000059000000000400900004500000300000000000000096000002
000000000000001009890006304500000000000000000000090703009007052000504000400000000
000009000000000700010400800200000000000000000041005603020000000000100008630094005
009000020400009000005060400000000039004106000000700000000002006000000000021070300
090000800000000400600203001008000900000000300014930000007000004000600000000001000
000000007000000200000005000000070000000000001009150702000000000807000005001004603
000300070005000000004000800000028000002500100800003500000600005006000000000000306
000000000008009004205078900002000050600000000000306090500000020900000008000030007
009800000000300000000007005700000640100000800000080000006000200000000007370201050
Regular Clueless Explosion #20D (Grand Master)Rating based on required solving techniques: Extra Hard
000700040000000800204080010000059000000000400900004500000300000000000000096000002
000000000000001009890006304500070000000000000000090703009007052000504000400000000
000009000000000700010400800200000000000000000041005603000000000000100008630094005
009000020400009000005060400000000039004106000000700000000002006000000000021070300
090000800000000400600203001008000900000000300014930000007000004000600000000001000
000000007000000200000005000000070000000000001009150702000000000807000005001004603
000300070005000000004000800000028000002500100800003500000600005006000000000000306
000000000008009004205078900002000050600000000000306090500000020900000008000030007
009800000000300000000007005700000640100000000600080000006000200000000007370201050
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