Hi All, I think that line 171 ands 556 of CbcStrategy.cpp should use -100 instead of -99 in order to restrict cuts to the root. thanks. int setting = cutsOnlyAtRoot_ ? -99 : -1; Gabrielle A. Grün, Ph.D. Student School of Computing Science Simon Fraser University 8888 University Drive Burnaby, BC V5A 1S6 <http://www.cs.sfu.ca/~grun>