【摘要】主攻251637头,173409尾
1、排除904头,231百,149十,尾685
2、铁卒:15、17、38、78.
3、三字现:256,457,456,189,134,567,389,247
4、二字定:
6XX4 50XX 30XX X4X7 X42X 1X2X 2X8X 65XX 6X7X 3X2X
5、三定:55X1,17X3,60X3,54X7,250X,25X1,X571,246X,X707,X961,20X4,64X3,X773,
6、直码:2071,2061,2771,2761,5071,5061,5771,5761,