Pawn to Queen Puzzle | Chess Riddle

A puzzle designed by Sherzod Xaydarbekov.


Here are the rules:

You set up the board as is in the picture.

Bottom right a pawn.

Then a row of rooks.

Then a row of bishops.

Finally a row of knights.

Bottom left, which I painted golden, stays empty.

You'll also need one Queen.

All pieces move as they do in a regular chess game. (They are all the same color (or treated as the same color if you use your own chess pieces) and can't beat each other.)

The rectangle field on the bottom (that I painted silver) is inaccessible.

GOAL 1: 

Move the pawn to the final row (the one in the beginning occupied completely by knights), where it turns into a queen (not pictured). Then try to move the queen to the golden field on the bottom left. If you did so, you solved it!

GOAL 2: 

Do it with the least amount of moves possible.

It can be done in 22 moves; and I have seen people claim 21 moves, but this I can't confirm.)

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I only built the Board in CAD. You can use your own chess pieces or print whatever you like, Printables alone offers so many wonderful options.

(Shout out to User @Hochkant, I used their pieces in the picture: https://www.printables.com/model/214964-chess-figure-set-dubrovnik-kingsize-386-mod-easy-t )

SIZE:

At 100% scale, each square in my board is 1cm x 1cm. For the version in the picture I scaled it up to 240% (and @Hochkant's pieces down to 52%).