Complex sentence: Three in one, Two in one, one in one, if your oponent is left with this they will be forced to either take one from the three in which case you would take the one and make the two rows even.
Split into simpler sentences: Three in one, Two in one, one in one, if your oponent is left with this they will be forced to either take one from the three. In which case you would the one and make the two rows even.