There are three difficulties to choose from.
All three puzzles have the same solution.A) Novice.
B) Apprentice (mainstream edition).
C) Master (75 Intersections, 4 Naked Pairs, 4 Naked Triplets,
3 XY-Wings: one in g1, one in g3 and one in g4,
1 X-Wing in g3).
Select to view GRID numbers.The advanced techniques are needed in 3 different grids.Regular Clueless Explosion #24A (Novice)Rating based on required solving techniques: Moderate
000005000003000000206080010000040008000000201007200300000000000004000000700068024
009000000000802000030000100010008760000000000300000800000005000005300000200001690
000000000000000000207000403000000007300002000900300600020060000000400001500018270
000900400000003001508000700030000009000000005705300000003200050000006000401090003
060300000000000000000500009029000005000004000006009040000000000108000000030000850
000000008009000000000371009200000080700004000000060500000402007000900600090000000
000780090100000000003000500000002000005000006804000003306000000700800400050000100
020000001000005907000000000640000000000708000000090630000000400200100009004070005
004700000000001000050000108006000000002000009000008000800470002000000500030090006
Regular Clueless Explosion #24B (Apprentice)Rating based on required solving techniques: Moderate
000005000003000000206080010000040008000000201007200300000000000004000000700068024
009000000000802000030000100010008760000000000300000800000005000005300000200001690
000000000000000000207000403000000007300002000900300600020060000000400001500018270
000900400000003001508000700030000009000000005705300000003200050000006000401090003
060300000000000000000500009029000005000004000006009040000030000108000000030000850
007000008009000000000371009200000080700004000000060500000002007000900600090000000
000700090100000000003000500000002000005000006804000003306000000700800400050000100
020000001000005907000000000640000000000708000000090630000000400200100009004070005
004700000000001000050000108006000000002000009000008050800470002000000500030090006
Regular Clueless Explosion #24C (Master)Rating based on required solving techniques: Super Hard
000005000003000000206080010000040008000000001007200300000400000004000000700068024
009000000000802000030000100010008760000000000300000800000005000005300000200001690
000000000000009000207000403000000037300002000900300600000000000000400001500018270
000900400000003001508000700030000009000000005705300000003200000000006000401090003
060300000000000000000500009029000005000004000006009040000030000108000000030000850
007000008009000000000371009200000080700004000000060500000002007000900600090000000
000700090100000000003000500000002000005000006804000003306000000700800400050000100
020000001000005907000000000640000000000708000000090630000000400200100009004070005
004700000000001000050000108006000000002000009000108050000470002000000500030090006
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