Does Samsung pay (Apple pay, android pay) work with chip and pin readers on Europe?
Not certain about Samsung specifically, but Apple Pay is in widespread use in the UK. Especially on the London underground/subway/tube/metro system where it can be instead of the Oyster Card. On the continent Apple Pay hasn't been launched yet as many merchants/banks are balking at Apple'$ high fees.
Currently (US) Android Pay accounts only work in the US.
I did see contactless terminals in Ireland this Spring but I didn't test Google's assertion that Google Wallet/Android Pay wouldn't work there. You need NFC (contactless) capability, not a chip reader, for Apple Pay and Android Pay.
Samsung Pay works via regular magnetic stripe terminals by imitating the magnetic signature of a card being swiped though the slot, but I don't know enough about it otherwise to offer an opinion. Most European terminals can still process a US-style magnetic card.