Online:The King's Gambit

Quick Walkthrough
#Find a way into the inn.
#Talk to King Kurog.
#Talk to Forge-Mother Alga.
#Find Eveli and Chief Bazrag.
#Find a way to the moot.
#Talk to Chief Bazrag.

Detailed Walkthrough
 
When you next come to Orsinium after completing The Anger of a King, Mulzah (the innkeeper's daughter) will approach you. She is not very happy with you and your meddling friends, since her inn has now been seized by the King's men.  The upstairs entrance is guarded, as is the secret entrance through Mazabakh's House: the downstairs entrance is locked but unguarded. You need to get in, and there are several ways: pickpocketing the key from Sergeant Vulmon (patrolling near the King's Cornerclub), or finding another copy of the key at the guard meeting area (you will need to either sneak past several guards invisibly or fight them). If you spared Gulug during the earlier quest Invitation to Orsinium, there will be a third option, to meet a "really stinky merchant" at the bath house who seems all too friendly with the soldiers: Gulug has bribed a guard for a key himself, and will give it to you if you speak to him. Either way, you will acquire a key to the Greedy Gut's downstairs entrance.

If you did not sacrifice Talviah in the earlier quest: 

You won't have learned the complete Vosh Rakh plan. The inn will be empty except for Owayine, who has been stabbed and left for dead. Before he dies he will tell you that Eveli and Bazrag were both captured, "by order of the king", and they never saw it coming.  Your next direction is to go and talk to King Kurog (in case Kurog is not in on the plot, and genuinely believes Bazrag to be guilty, in the hope of clearing his name.) Kurog will be pleased to see you - though angered when you ask questions about why he sent soldiers to the inn, or where Eveli and Bazrag might have been taken, or whether his own soldiers have been infiltrated by the Vosh Rakh.  He will then direct you downstairs to the dining hall where you can talk more privately: however, you will be greeted not by him, but by Forge-Mother Alga who will accuse you of meddling, and then reveal herself to be the power behind the Vosh Rakh, and that the attack on the moot is intended to murder all the chiefs to unite Orsinium behind Kurog.  She will then call you a traitor, declare you to be sentenced to death, and force you to carry out the sentence yourself by stabbing yourself. You will pass out just as you hear Kurog saying "I'm sorry it had to come to this. What I do, I do for the good of the Orsimer people".

That isn't the end of it: you will wake up, attended by Shield-Wife Razbela, who will have dragged you to a different room and healed you before Vosh Rakh soldiers arrived, saying that you deserve better than to fall to Alga.  She will even give you a key to release Bazrag and Eveli from the cells, but ask you to leave Orsinium with them. She says this was not Kurog's plan from the beginning, that he hoped the chiefs would come to believe in his vision: and that Kurog does not actually hate Bazrag, despite having framed him, but that he has served his purpose... and that the death of the other chiefs will be a necessary sacrifice in the quest to unite the Orsimer.  Nevertheless, despite giving you the chance to leave, if she meets you again, and you go against Kurog, she will fight you to the death.

The palace will be crawling with Vosh Rakh soldiers, as you head down to the cells to free Bazrag and Eveli.  Bazrag still doesn't want to believe Kurog is himself working with the Vosh Rakh, despite having been jailed, however he will accept your evidence. He tells you there's a passage to the planned Moot location, from the throne room: if you have any problems, find him outside the keep and he will figure something out. Heading into the Throne Room will result in a confrontation with the two Shield-Wives, Oshgana and Razbela, in which, true to Razbela's word, she (and Oshgana) will fight you to the death.  Although there was supposed to be a secret passage out of the Throne Room, it's currently blocked or non-operational: however, once Razbela falls, the note "The King's Orders" will appear on the throne, saying that all paths to the Moot have been sealed, except for one through the Temple of Ire, and a squadron has been sent to deal with Solgra and seal that passage.

Exiting the palace will lead you to Bazrag and Eveli, around a corner not far from the palace door.  Bazrag will be surprised that there's a route to the moot through the throne room, but knows that soldiers have already been sent after Solgra, and that's bad. He thinks there's one more place where he can look for help, and sends you to the temple in the meanwhile, in the hope of saving Solgra.

If you sacrificed Talviah earlier: 

Eveli and Bazrag will have been forewarned, and will be in the process of dispatching a Vosh Rakh assassin or two as you arrive, so they will be there to talk to you about the impending attack on the Moot.  Bazrag, although he has opposed Kurog, still appears to think he has good intentions, and that Kurog himself may be in danger from his mother's control of the Vosh Rakh - perhaps she is trying to usurp him - and believes you should go and warn Kurog, while Eveli goes to look out for High Priestess Solgra.  The meeting with Kurog begins with you telling him what, in this instance, you already know about Alga's involvement with the Vosh Rakh: and when he suggests you meet downstairs in the dining hall, Alga will not meet you in person, but send a vision of herself.  You will still be called a traitor, sentenced to death, and magically forced to stab yourself, as above.  

However, it will be Bazrag himself (instead of Shield-Wife Razbela) who has managed to sneak into the palace and drag you to another room to tend to your injuries. Amazingly, his first thought is still to believe that Kurog is in danger, until you tell him that Kurog is now involved: the question of whether Kurog had this in mind all along, is one to which he does not know the answer, nor does he know why or even whether Kurog actually hates him, or just found him to be in the way, and in fact he wonders how things would have gone if he had been more willing to follow Kurog's dream in the first place.  He tells you that one of the ways to the Moot is through the throne room, so you head straight there, through the palace and its new contingent of Vosh Rakh soldiers, to the confrontation with the two Shield-Wives, the discovery of "The King's Orders" and the fact that the only way to the Moot now is through the Temple of Ire.  While you are doing this, Bazrag will sneak out of the palace again.  When you yourself also exit the palace, Bazrag will be in the same place as above - behind some crates not far from the palace doors - but he will be alone, because Eveli has already been sent to guard Solgra.  

In either case, Bazrag will give you the reward of the King's Snug Girdle.

Notes
The name of this quest is a reference to the King's Gambit chess opening.
 

Quest Stages