What if the indians do this:
They launch a strong armd thrust towards the central sindh as a part of a diversionary plan. The five corps perceives it to be the main attack of indian south western command but it is not and the 5 corps send most of its forces to meet that attack and after the indians know that most of the 5 corps is busy the may launch their main attack that is move in the Northern sindh which is the area of responsibility of 5 corps so they pass without little or no resistance and from the motorway turn north and outflank rahim yar khan from the south. Until they enter the AOR of bahawalpur corps they will have a clear run and its very difficult to stop an armd striking force once its in full momentum. Though pakistan has some defence canals but they prove to be insufficient. Rahim yar khan os a very imp junction and on the negotiation table every inch counts. Pakistan may use its 2 strike corps but it'll jeopardize the whole offensive capability of PA. Only airforce would be able to delay them and Pakistan would be forced to use nasr
View attachment 674626
Legend:
Green shows the diversionary attack by india
Red shows the main attack of india after the main Karachi Corps has been
Blue shows the flanking move by the main indian thrust towards Rahim yar khan
Purple shows the AOR of bahawalpur corps (roughly)