To resolve the ongoing feud between Prochek and Olbram in Kingdom Come: Deliverance 2 during the Battle of the Frogs and Mice side quest, follow these steps for a peaceful resolution:
How to Start Battle of Frogs and Mice in Kingdom Come Deliverance 2
To initiate the Battle of the Frogs and Mice side quest, you must first complete either the Mice or Frogs quests for Prochek and Olbram. Once you've completed one of these quests, you can start the next one by speaking to Prochek in Tachov or Olbram in Zhelejov. After initiating the quest, head to the pasture to begin.
Should You Side With Prochek or Olbram?
In this quest, you're faced with the choice of siding with either Prochek or Olbram. However, there's a way to end the feud without taking sides. If you choose to side with one, speak to your chosen ally—Prochek in Tachov with the line, "Let’s get those Zhelejovites!" or Olbram in Zhelejov with, "Let’s go and see those Tachovites!" During the negotiations at the pasture, passing a dialogue check can cause an enemy to flee, making the fight easier. Winning the fight for either side will earn you some groschen.
How to Stop the Feud

For a more harmonious outcome, before heading to the pasture, ask Prochek or Olbram if they want to end the feud. Then, travel to Troskowitz to meet Baliff Thrush and select the dialogue option, "You’d finally have some peace." Successfully passing the dialogue check allows you to access the Troskowitz Chronicle in the scribe’s room. If persuasion fails, you can sneak in to read it, but remember to save your game beforehand.
Once in the scribe’s room, choose the dialogue option, "Fecit, ordinem in regione ope clavi ferrei."

Next, go to the pasture and locate three oak trees aligned next to each other. Examine the middle tree to find a nail. Your choices with the nail are:
- Leaving it in the middle tree will split the pasture equally between Tachov and Zhelejov.
- Placing it in the west tree will allocate more land to Tachov.
- Placing it in the east tree will allocate more land to Zhelejov.
The choice of where to place the nail is up to you, based on your preference or neutrality. After deciding, speak with Baliff Thrush again, who will agree to end the feud. Then, bring Prochek or Olbram to the pasture to finalize the resolution.
Afterward, speak with Baliff Thrush to receive the Master Studies I book.
By following these steps, you can successfully end the feud during the Battle of the Frogs and Mice side quest in Kingdom Come: Deliverance 2. For more tips and information on the game, be sure to check out The Escapist.