Hallway Chess: @vickalan VS @PixelByPixel

Actually, the second. Even if the Bishop is not between the Rook and King, it must leave its square.

How about Kd1?

You still have to move the bishop.

b5.

2.d3

btw, just to clarify, if the king castles to D1, where does the rook move to? B1 or C1? (I assume when king castles to B1, then the A1 rook moves to C1).

Also, I did a rough calculation to estimate the complexity of this game. My estimate is that the total number of different games possible of this variant is 10^60. That is this many games:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000.

(If you or anyone would like to see the calculations just let me know).

After this game, we can keep playing and be sure we'll never need to repeat the same game.

It moves to C1.

Bc6.

Yup, a lot. Obviously chess has a lot more. Are you able to watch a YouTube video yet? This video explains the Shannon number:

Thanks for clarifying it. My move:

4.e4

I also liked this position (after these moves):
1.c4...d6
2.b3...b5
3.d3

@PixelByPixel, can I call this "vick's opening"?😋

d5.

I'll play my move later, but for now I should point out that it looks like you gave me a free pawn on e2. Don't worry, I'll remove it when I post my move.

I added space for captured pieces. If you'd like to keep using this style you can right click on the pic to copy it. My move:
5.exd5

Bd7. Sorry, no time recently.

No worries. I'm busy too. Sometimes hard to make a move for every game on every day. My move now:

6.a4

c6.