Routing problem

Hello everyone,

Can any one help me with the following problem?
I have the following network ilustrated in diagram below
Ndiagram.png
I cannot ping computer 172.23.2.2 from 172.172.9.200. The package are stopping at Router1
pingnok.png
But from Router1 I can ping the computer with ip address 172.23.2.2
pingok.png
The conection between Router1 and RIZV is VPN connection.

What I’m doing wrong??

Thank you very much!