The best chance is possibly Ranthambore. It's close to Jaipur as well (which is on most tourist itineraries) and easier to access than other reserves. It's also

The best chance is possibly Ranthambore. It's close to Jaipur as well (which is on most tourist itineraries) and easier to access than other reserves. It's also a much smaller park so it's easier to catch tigers, especially during summers.