first, 4 - 4
& x, y* Y3 J* k, ~# I2 a3 k8 [7 wif one side more heavy, take up and check next. if equal, then the uncheck 4 take to check next.公仔箱論壇0 S( f1 N' Y0 b3 [$ R
second, 2 - 2+ t# g2 c6 E U9 t6 H B
take the different 4 spread to 2 - 2 and check it. more heavy side take up to the next step.公仔箱論壇# ~- x: }% S/ v$ h
third, 1 - 1
* d# u: v( ~3 ~- ? pbingo!! |