Rebirth: A Fresh Addition to the Game of Chess

Recently, I found myself struggling with positions involving material imbalances, especially those where I had to fight a queen using only minor pieces and rooks. It made me wonder: what if there were a way to create a Queen without promotion?

That question sparked an idea. I’m not sure whether it already exists or if someone has tried it before, but here’s my take on this special chess move.
I would like to call it "Rebirth"
Let me walk you through it.

Rules

First comes the general conditions & requirements, upon which you can "Rebirth" your Queen.

• You should not have an already existing queen — For rebirth to happen you should be missing a queen.
• You need to possess the following things — 1. A Rook; 2. A Bishop; 3. A Pawn. (Since the queen operates like a Rook+Bishop & the extra pawn is to equalize the material)
• Rebirth cannot happen when it is a check — to you or to the enemy king (Not a Bughouse)

Next comes the arrangement,

The Bishop is the anchoring element in the formation (means that it needs to be in the middle). The placement of the Rook and the Pawn doesn't matter.

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Now comes the next question — Where is the Queen formed?

The Queen is formed on the square where the Rook is placed
The last move could be anything (Pawn, Bishop, Rook) — It don't matter as long as the formation is maintained.

Below is the video to explain it better;

https://youtu.be/c1CXrYDz06w

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Special Case

What happens when the diagonal is formed when the pawn reaches the 8th rank?
The answer it quite simple. Consider it to be equivalent to the case of promoting a pawn to a Knight, Bishop, Rook or a Queen (where choices exist) — You can either use the special move or just promote it to a queen depending on the need.

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Illegal move

This is quite similar to castling. You cannot use this special move when your enemy piece is guarding the "Rebirth" square (ie., the square of your Rook) — See below examples.

• Positions 1 & 2 collectively is an example of a CORRECT rebirth. In 1 — after Rb4, you can rebirth your Queen on b4 (Rb4=Q). But this is not the same case with Rd4 — It is just a normal move. You cannot rebirth on d4 as Black's Bishop on a7 controls the d4 square.
• Positions 3 & 4 collectively is an example of an INCORRECT rebirth. In 3 — Black's Rook on d1 controls the d5 square (where White's Rook is currently present). White could still play f7, but cannot rebirth on d5 as it would be an illegal move. f7 would just be a reqular move instead (4).

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Some positions where you cannot Rebirth

In position 1:

Bd4 is just a normal move. You cannot Rebirth as Qe5 would be a check (to the Black king). Rebirthing with checks are not allowed. This implies that Rebirthing that gives rise to checkmates are also not possible. You cannot play Be3-f4 followed by g3 too. You can Rebirth on e5 if Black's king was on g8.

In position 2:

Be4 is just a normal move. You cannot Rebirth on d5 as it would be illegal. The Rook on e8 would be staring at your King on e4.

In position 3:

Rf4 is just a normal move. Eventhough it blocks the check, you cannot Rebirth on f4 at the end. That's a rule. Consider it to be similar to 0-0 or 0-0-0. You cannot castle during a check right? Same applies here.

In position 4:

This is similar to position 1. White can play hxg3, but is just a normal move. Can't Rebirth on e5 as it is illegal.

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Another question might arise — is Rebirth a separate move or not?
Consider it to be like a pawn promotion. You push the pawn and make a Queen/Rook/Bishop/Knight. Similarly you move the Bishop or the Pawn or the Rook to get the arrangement to rebirth your Queen. Of course choosing to rebirth is your choice — Just like "En passant".
But it is not a separate move. Let's say for example you have the Rook and Bishop and Pawn aligned to get a rebirth. You simply cannot rebirth according to your need eventhough the conditions are satisfied. Let us suppose you have chosen not to rebirth on the previous turn, and on your next move you still have the ability to rebirth — In such a case you simply cannot start off by rebirthing your Queen. You first have to make a normal move and only then end your turn by rebirthing (NOT BEFORE).

In the above (4.1 & 4.2), If it is White's turn,
White can Rebirth by the move Kh2. That is, White could play Kh2 and end the move with making a Queen on e5 (as it is legal) — The notation would be Kh2=Q (it is understood that Kh2=Qe5).
But, If White played Kh2 and didn't rebirth & Black replied with Kc6 — White cannot start their next turn by Qe5. Instead they need to play something like Kh3 or Kh1 or a3 or a4 first and then end their turn with Qe5. An example notation would be a3=Q

A quick tip: Be careful upon rebirthing in endgames— There might be some stalemating ideas

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I hope this was interesting and would really love to see it come to life!

I have few other ideas for a variant which I will post later...