These are the steps I followed and the account created:
When I posted a solution, system asked me to login.
I logged in with
gmailaddress. ( Don't know if previously it were
redirected to captcha.
Provided values and Instead of posted with existing account system has created the new one.
I usually use this to log into my account:
My question is: How can I deactivate my new account which has 1 score for now?