My favorite system is the +12/-12. Not because it hits coz it hits Kansas maybe every 3-6 days. Now the way I like to play around with this system is to take the last draw and do the 6-way with the draw. Fortunately, I have the program otherwise I would be doing this one by hand. I put the 581 in the program and it had Ks's 469 boxed. To do this by hand take your last draw and add 12 to the front pair and back pair. taking the same draw minus 12 from the front pair and back pair. using 581 Apparently you use regular math

Front pair 58 back pair 81

Add                     Minus 

58         81          58          81             

12         12          12          12

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70        93          46            69           

581

709, 703, 704, 706, 793, 794, 796, 799, 734, 736, 739, 746, 749, 766, 769, 093, 094, 096, 099, 034, 036, 039, 046, 049, 066, 069, 934, 936, 939, 946, 949, 966, 969, 346, 349, 366, 369, 466, 469, 669

---------------------------------------------------------Now I will use 518

518 NH

633, 630, 639, 636, 603, 609, 600, 606, 690, 696, 330, 333, 339, 336, 303, 309, 300, 306, 390, 396, 039, 030, 036, 090, 096, 006, 906
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815 NH

633, 630, 639, 636, 603, 609, 600, 606, 690, 696, 330, 333, 339, 336, 303, 309, 300, 306, 390, 396, 039, 030, 036, 090, 096, 006, 906

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851 NH

976, 973, 977, 979, 963, 967, 969, 937, 933, 939, 763, 767, 769, 737, 733, 739, 773, 779, 637, 633, 639, 673, 679, 373, 379, 333, 339

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158 NH

277, 270, 273, 274, 276, 200, 203, 204, 206, 234, 236, 246, 770, 773, 774, 776, 700, 703, 704, 706, 734, 736, 746, 003, 004, 006, 034, 036, 046, 346

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185 NH

309, 307, 300, 306, 303, 397, 390, 396, 393, 370, 376, 377, 373, 367, 363, 097, 090, 096, 093, 070, 076, 077, 073, 006, 007, 003, 067, 063, 970, 976, 977, 973, 906, 907, 903, 967, 963, 706, 707, 703, 767, 763, 773, 673

The original drawn number worked better here

I will usr the +12/-12 program to see if the original numbers had a next day hit. usually there are to many numbers to hold for 3 days or so. starting with KS 7/1/10 450 usually the +12/12 has at least two of the numbers in the next draw. The 450 didn't . It had one 7 of the 747 for the 7/2/10 On 7/4/10 the 335 hit the 122 on the 5. The122 didn't hit the next double 808 on the 6th. The 808 didn't hit the double 994 but it did have the pair 99 The 994 didn't have the 790 even tho it also had two of the next numbers 7,0.