A new multiple break points detection procedure has been developed which takes the problem of significance and efficiency into account. The significance and the efficiency are formulated according to the conventional statistics related to type one and type two errors, respectively. This test obtains not only estimated break points and shift values, but the corresponding confidence intervals as well. The series can be adjusted by using the point and interval estimates.Since a MASH program system has been developed for the PC, the application of this method is relatively easy, with emphasis on GAME of MASH (see program MASHGAME.BAT), which is a playful version of MASH procedure for homogenization. This version can be developed towards the automation.