[JCP-YGO] Chaining Summon Negators

[UDEbot]

from UDE's Judge Certification Program (YGO)

Player A declares his intent to Normal Summon Sangan.
Player B responds with Solemn Judgment.
Player A chains with another Solemn Judgment.
Player B chains with Forced Back.

Is this chain legal?

Thanks.


http://entertainment.upperdeck.com/COMMUNITY/forums/thread/1441310.aspx