Let's invent some very weird pieces

The Kings in Odin's Rune Chess move somewhat like that. (Except that they only borrow moves from allied pieces, not from enemies.)

(On an irrelevant limb)

One must remember that we humans are hardly original.  The pieces and chess game rules that we "invent" have already been "invented" by people before us. And, they will be "invented" by people of the future who may not know about us.

Our recourse is that we don't know about those who came before us, and future "inventors" don't know about us. We can rightly prize ourselves as being 'the first to come up with such a brlliant idea' because of it; since it still took our sincere innovation and ingenuity to come up with the pieces ourselves, uninfluenced by whoever might have done the same before.

Just thought I had to express this sentiment.

The car: moves like a rook but it cannot go past any attacked square so if it has a square being attacked on the 3rd rank it cannot go past the 2nd rank or if a rank is controlled it cannot touch

True

New ideas.

1. A KILLER PAWN, when it turns into any piece, the same piece of the opposite color is removed from the board(but if it is on the board).

2. The LAZY KING moves like a king, but goes only from under the check.

3. PADISHAH is a combination of a king and a camel, but it captures only as a king.

4.A CAT AND A MOUSE. The CAT moves and captures like a knight and a king. The MOUSE moves and capures like a king, but can neither move nor capture while there is a Cat of its own color on the board. If the game is played with a Mouse without a Cat, then the Mouse moves and captures like a king, but does not have royal powers and can be captured. Also, the Mouse can jump off the edge of the board and run away, but it can appear on the board again from the extreme field from which it ran away.

Fauxroy (probably a better name for this)

• Movement
  • Moves exactly like a king, but has no "royal privileges" (check doesn't affect it, can move into danger and be captured, etc.)
• Capturing
  • Cannot capture... normally, at least
• Special Trait(s)
  • A Fauxroy is allowed to move to and capture any figure threatening it on its turn.

Probably really low value, but would have some interesting niche uses!

avenger

if a piece is captured it will destroy the piece that captured it

but then it gets full

so no more eat

then it eat 10 min later

and then take another eat and then 10 min break

and then it will get tired

and sleep

and it will get distracted

and then it will get captured

and then the piece that captured it will get its ability

and then it can promote to whatever it wants (including fairy pieces)

I like the idea behind this piece. Sounds fun and interesting.

1. A giant tiger
2. It shoots
3. It eats tacos
4. It spawns pawns every turn 
5. It can go in a N shape

worth 8 points

how about knights which explode it  you touch them?

uhmm

a super OP parrot that if you sacrifice all your pices first will have that piece and then next turn you win the game 

Perhaps that part requires some further explanation. How I read it makes this piece overpowered.

If a knight is attacking it, it can capture the knight

If a pawn is attacking it, it can capture the pawn

If a queen is attacking it, it can capture the queen.

If a king is attacking it, the king is in check.

What part needs explanation?

The reversal  pawns: their initial position is a2, h2 for white and a7,  h7 for black. 

They act like a standard pawn if you exchange diagonal and vertical movements.

Let's  explain better.

Standard  pawn moves vertically  and captures 1 square up diagonally, while a reversal pawn moves diagonally and captures vertically up one square.

A reversal pawn moves 1 square  (diagonally) but also 2 from the starting position.

En passant is possible when the reversal pawn moves 2 squares (diagonally) from the starting position and its intermediate position is met by another pawn (standard or reversal) that can capture it there at the very next move. Hope it was clear 😅

We could decide if the rule allows a zig zag movement or just a straight diagonal.

the nothing 

it does nothing cuz it is full

and then it gets mad that it dozent get anything to eat so on move 3 it explodes

and then comes back to life

and then explodes 

and then comes back to life

and then explodes

and then comes back to life

and then explodes

and then resigns

and then it spams cuz it lost

and then it cries 

it cries it cries it cries

and then floods the computer 

and then it dissconnects

and then it gives up to go to the other army because noone treated it will

and the same thing happens again

and again

and again

and again

until it is an enemy from both sides

but then the piece God gives it powers

but then it explodes because it is sad

The part where you say that this piece is probably of low value. Because to me it seems totally overpowered.

And, can it only capture a piece that started attacking it on the previous turn? Or any piece that is or has been attacking it for no matter how long?

hmmm yes ima call this RHM the peice can be obtained by pawn promo only its bacically a queen but it can jump over materials like how a night can EEEEEE

Any piece attacking it for no matter how long.

I did not say the piece would have low value, @EchoInProgress wrote that.

I think the value is quite high, although not overpowered. The downside with it is that in order to proactively attack something it needs to move to a square where it is attacked. In most cases you cannot use it to try to capture pawns for example.

I think the piece is most useful reactively when the opponent wants to move a piece to a square it would also attack this piece.

If you are unwilling to trade this piece for a queen, then I think you will have a hard time getting much use of it. I think it is far from overpowered.