>>chaps+c5
"Captcha" doesn't refer to any specific type of puzzle, but a class of methods for verifying human users. Some older-style captchas are broken, but some newer ones are not.
>>rfw300+G5
I'm aware. But I'm also aware that breaking these sorts of systems is quite fun for a lot of nerds. So don't expect anything like that to last for any meaningful amount of time.