URL RegEx

[DevPunk]

forums/test.654654564/44654562356456-blabla.html
I want to redirect this kind of URL...

I had this RegEx
^\/forum\/.+\.([\d]+)\/([\d]+)-.+\.html$

Unfortunately, the error that also handles this URL is
forums/test.654654564/44654562356456-blabla.2332423233242.html
This must not be allowed to happen. Any ideas?