If you count all the enclaves and exclaves between India/Bangladesh, Belgium/Germany, Belgium/Netherlands, Germany/Switzerland, Italy/Switzerland, Uzbekistan/Kyrgyzstan etc. you'll have a lot more answers
That is exactly what I what thinking I'd just had a look at the India Bangladesh are a few days ago and it looked crazy. It would be way too complicated to include all of those plus the ones in the stans. Also, South Africa - Mozambique is missing. Aside from all that this is a brilliant idea for a quiz and should definitely be featured some time.
There are also multiple enclaves along the Uzbekistan/Kyrgyzstan border giving them multiple separate borders; there's a land "island" of Italy inside of Switzerland near Lugano; and there's a piece of Germany inside Switzerland at Schaffhausen. Also, I think there only two stretches of border between Morocco and Spain, at Ceuta and Melilla.
Missing Indonesia-Malaysia (one border on Borneo and one border on Pulau Sebatik) and Germany-Poland (main continental border and second border on Usedom).