Lose 10kg (22pounds) in 50 days?

Sorry, loosing 22 lbs in such a short period is not recommendable !!

Nah... You can lose a lot of weight in 50 days if you really commit. Last year I lost 8kg in 60 days (10% of my total weight) and did not starve at all. It took me 9 months to gain it all back, mainly because of a knee injury that kept me from exercising. Right now I just started the whole thing over again with a goal of losing the same amount by the end of november. Sure, some of that was body water, bit the rest is fat + lean mass.
And it's nothing fancy, just commit and be very very strict, don't cheat on yourself.
a) get a low calorie diet with a net daily goal of 1000-1200
b) eat small sized interspersed meals during the day, avoiding fats at all (never go over the 30 % MFP limit)
c) do lots of steady cardio, like jogging / biking . I did about 5-6x times a week with an estimated 400-500 calories lost for every session. (If you jog slower you probably need more time to achieve that - I use the Endomondo app to track my calories/exercises).
d) Two sessions of general weight training during the week to avoid losing much lean mass (you'll lo se anyway, just nota that much).

Main rule is dont cheat and keep exercising... If you want you can add me and I will try to help you out as I also to shed a lot of weight by November 30th.

I don't reckon its unrealistic to lose 3lbs a week over 7 weeks...I did that and more when I started on my journey over 5 months ago. Exercise certainly contributes but, as always, it's all about monitoring intake, honestly and carefully, and making sure it's below what you are using. Once you've hit your target, you can then re-adjust to a maintenance regime, which is where I'm now at. Best of luck on your own journey...you can do it if you really want to.

Google "Fat Fast" This sounds like a fad diet, but there is actually a lot of science here. This "ketogenic" diet was 1st used to help children with epilepsy. Also google authors Jeff Volek, Steven Phinney, and Dana Carpender. If you have the self discipline to eat this way, you will lose body fat and not lean muscle. Good luck.

Bump

Even I have to agree that is a tall order, I have done just that under medical supervision in the last seven weeks but I started at 113kg with a lot more to lose. My advice is work hard with the fitness and don't bother with the target weight in seven weeks you can definitely be a lot fitter, slimmer and toned with a little hard work!

A kg per week is doable as others suggest. When you loose weight you generally lose weight in both fat & muscle so if you don't want to loose muscle you'll have to do lots of muscle building I.e. weights. What others say is right though. Its not really recommended for 2 reasons. If you're young no worries, but if you have medical issues then do it under some monitoring and secondly diets generally fail. I read today in a uk survey of 1000 dieters. 10% lasted less than 2 days. 20% had quit within a week. Only 20% lasted 3 months. And only 5% were still dieting after a year. Which category will you be in?

just jog and maintain a calorie deficit.

u cannot give yourself such targets.
as you will fail whatever way you try
any vlcd or specific diet for example
because you will gain it all back
and especially if you are in healthy or overweight category u have to be very patient.
but start with it and you will be fine.

Good luck

Set your goal for 1kg per week and do every day the Jillian Michaels 30days shred-you can find it on youtube all 3 levels for free. Also, do the Butt bible-all levels-3 ups and 3 lower body also on youtube. You need more toning than just weight loss. Change your diet and eat lots of fruits and vegetables and cut down on rice, pasta, bread, and processed food, soda. If you do these you will see significant change in your body, even though you might not lose the full 10kg but just 5.