Congratulations on securing a unique rank of 1047 in the inter-se-merit list for B.Tech 3rd counseling in Haryana! Here is a detailed, professional answer regarding your chances for admission into Computer Science (CS) at DCRUST (Deenbandhu Chhotu Ram University of Science and Technology):

• Rank Overview:
  A rank of 1047 is quite decent and gives you a moderate to good chance, especially during the 3rd counseling round when seats might still be available.

• Seat Availability:
  Admission chances depend highly on the number of vacant seats after the first and second counseling rounds. If many candidates withdraw or upgrade their seats elsewhere, opportunities increase.

• Category Factor:
  If you belong to a reserved category (like SC, BC, EWS, or any state quota), your chances will improve significantly compared to general category competition.

• Course Popularity:
  CS is among the most sought-after branches, making the cutoff relatively higher compared to other streams like Mechanical or Civil. Therefore, competition will be tougher.

• Previous Year Trends:
  Based on previous years' data, students with ranks around 800-1200 have secured admission in CS at DCRUST during later counseling rounds, but this can vary year-to-year depending on the demand and cutoff shifts.

• Backup Options:
  It is wise to keep backup options open by applying to allied branches such as IT (Information Technology) or ECE (Electronics and Communication Engineering) within DCRUST or other good universities if CS is highly competitive.

• Final Suggestion:
  Attend the 3rd counseling actively, keep all documents ready, and monitor spot round notices as well. Sometimes, additional rounds or spot counseling sessions open up further opportunities.

In conclusion, you have a fair chance of getting CSE at DCRUST with a 1047 rank, but keep backup options ready and stay alert for seat updates. Wishing you all the best for your admission!