Four-Player Infinite Chess - The Battle of Morgarten!

Why is it called the battle of Morgarten?

I named it after a battle that took place in Switzerland around the year 1310. I chose Switzerland because that's McGoohan's country, and he was one of the early players of infinite chess on this forum (winning at least 2 games). McGoohan has commented that he lives not too far from the city of Morgarten. An illustration of the battle is below (from Wikipedia). I think it's a little funny because there's some knight's horses sinking in the water. Soon our game might look like this! (But I hope there's no more animals used for war in real life).

5. Q (–17,22)

The Morgarten–Backyard is considered an exemplary example of skillful use of the site. The fight is sought and forced upon the opponent where the terrain favours the Morgarten–Team and weakens the opponent. An essential element of the warfare is also the surprise effect. 😉

Cool battle diagram. It looks like red is attacking gray with hidden attacks to trap the opponent at both the front and back! And red is uphill moving down on gray. Not good for gray!

First diagram shows White's queen move:

4.(16,3)...(13,5)
5.Q(-17,22)

This diagram is a detail of the main armies, but the yellow queen is not shown:

N(5,9)

4.(16,3)...(13,5)
5.Q(-17,22)...N(5,9)
Overview:

Detail:

Main Board:Zoom Out:5.Q(-17,22)...N(5,9)

6.Q(18,0)

Thanks Luke_Hands for the board updates. Now after my move:
6.Q(18,0)...B(18,9)
Main Board:

Zoom Out:

7. Q(32,22)

6.Q(18,0)...B(18,9)
7.Q(32,22)
Main board:

Zoom out:

(I still have paths shown for the yellow queen, but I'll remove them next time I do a board update).

I like this diagram very much, it shows very clearly that Infinite Chess doesn't only have the main board and you can think outside the box.

H(7,10)

7.Q(32,22)...H(7,10)
8.Bx(13,5)...H(22,12)
Main board  - not in display: Yellow queen on (32,22)

Zoom out:

9.Q(5,22)