This is an excellent system (Paddhati) of astrological predictions conceived, created  by The Great Indian Astrology King, late Prof. K.S. Krishnamurti. As you must have experienced that accuracy of the time period of the events is difficult when one uses Vedic or any other system. KP can give you a precise 'YES' or 'NO' answer astrologically to your questions. To overcome the above and similar short-comings of the conventional vedic system, KP comes as savior.

At the same time in cases of Twin Births the charts of then two persons will remain almost same in Vedic system. However there is always a lot of difference in them.

Major Differences From Vedic :

• KP system gives importance to the Constellations / Stars / Nakshatras divisions of the Zodiac which is obviously the most desired for precision. 
• Further it divides each Constellation / Star / Nakshatra division into further 9 subdivisions called 'SUBS'. These sub divisions are not equal divisions, but are as per the Vimshottari Dashas Divisions System. 
• K.P. System uses K.P. Ayanamshas as opposed to Lahiri Ayanamshas mostly used in Vedic System. The difference between two is about 6 minutes (Kala). 
• This system uses Cusps that is house/ bhav beginnings like Western Systems, as opposed to Vedic System which uses House Centres i.e. Bhav Madhyas. 
• This system uses Placidus House system. 
• The planet in it's dasha gives results as per it's Nakshtra-Swami (Star-Lord) rather than the planet itself. 
• Whether the above results will be benefic or malefic will be decided by the Planet's SUB. 
• Hence Planet is represents the SOURCE, that Planet's Star-Lord represents the EFFECTS, RESULTS and that Planet's Sub gives idea of the FINAL DIRECTION of that result. 

RULING PLANETS : Unique Concept of KP for Powerful Divine Guidance during predictions..

The Great Indian Astrology King, late Prof. K.S. Krishnamurti has written SIX READERS which are Classics like 'Geeta' or 'Bible' for the KP Astrology.