Hi Tantip:
Here's the idea behind this system. Below is the entire set of 4 digit numbers without repeating digits.
{0123,0124,0125,0126,0127,0128,0129,0134,0135,0136,0137,0138,0139,
0145,0146,0147,0148,0149,0156,0157,0158,0159,0167,0168,0169,0178,
0179,0189,0234,0235,0236,0237,0238,0239,0245,0246,0247,0248,0249,
0256,0257,0258,0259,0267,0268,0269,0278,0279,0289,0345,0346,0347,
0348,0349,0356,0357,0358,0359,0367,0368,0369,0378,0379,0389,0456,
0457,0458,0459,0467,0468,0469,0478,0479,0489,0567,0568,0569,0578,
579,0589,0678,0679,0689,0789,1234,1235,1236,1237,1238,1239,1245,
1246,1247,1248,1249,1256,1257,1258,1259,1267,1268,1269,1278,1279,
1289,1345,1346,1347,1348,1349,1356,1357,1358,1359,1367,1368,1369,
1378,1379,1389,1456,1457,1458,1459,1467,1468,1469,1478,1479,1489,
1567,1568,1569,1578,1579,1589,1678,1679,1689,1789,2345,2346,2347,
2348,2349,2356,2357,2358,2359,2367,2368,2369,2378,2379,2389,2456,
2457,2458,2459,2467,2468,2469,2478,2479,2489,2567,2568,2569,2578,
2579,2589,2678,2679,2689,2789,3456,3457,3458,3459,3467,3468,3469,
3478,3479,3489,3567,3568,3569,3578,3579,3589,3678,3679,3689,3789,
4567,4568,4569,4578,4579,4589,4678,4679,4689,4789,5678,5679,5689,
5789,6789}
Starting with the last 20 draws find one or more member from the above list so that at least one digit from this member appears in all of the past 20 draws.
If you can't find such a member from the group, drop the oldest two draws from the past draw list and start the search again. Sometimes you'll find that only one member from the list does the job, and other times you'll find more than one. All you need to find is one set of 4 numbers that work. These are you key numbers over the next five draws.
After five draws, update your past draw list and repeat the procedure to find a new set of key numbers.
I'd be happy to share this program with anyone.
jayemmar
WTG all Winner$. 
