Not likely. Blood cells are way too large to abide by the quantum uncertainty principle — they're not exactly made up of a single molecule.
They looked like dog snacks to me.
But that said, the torus is one of the most prevalent shapes in nature. Earth's magnetic field is shaped like a torus. Air bubbles released by dolphins under water also look toroid. Apples, tomatoes and nuts are also toroid in shape. Sometimes we only see the upper or lower half of a toroid, as with the shape of flowers, mushrooms and jellyfish.
Tesla coils are also toroid in shape, as you can see here...
Color emphasis is mine...
I'm inclined to agree with that.
That is actually highly possible.
You can make your own moves, but only to a certain extent. You always have to abide by the rules of the board. Every piece has its own set of legal moves. For instance, a knight always moves in the shape of an L (or an inverted L) and cannot make any other moves. Bishops can only move diagonally and are bound to the color of the square they're on at the start of the game.
A pawn can only move forward, and in a straight line, but it attacks and/or strikes diagonally. It can also only move one square at the time, except on its first move away from the starting line, in which case it can move either one or two squares. If it moves two squares to avoid being captured by a pawn from the opponent, then the opponent has the option of making an
en passant with his own pawn — it is French for
"while passing" — and capture the pawn with the exact same move as if it had moved only one square. A pawn which has crossed the entire board gets promoted — usually to a queen, although it may also be promoted to another piece if the player so desires.
When the king is in check, one may not make any other moves than making sure the check is undone. A king can only move one square at the time, but he can move in all directions. If the king has not been moved yet, is not currently in check and would also not be crossing or ending up on a square where he'd be in check, and there are no pieces left between the king and the rook, then the king may also
castle by moving either two squares to the left or the right, and then the rook jumps over the king at the same time to the square to the king's immediate right if the king castled on the left, or to the king's immediate left if the king castled on the right.
The size and layout of the board are also predefined. There are 64 squares, and the board is always oriented so that the rightmost square on the bottom row is a white square.
The game also always starts off with the pieces in their legal starting positions, which are mirrored between white and black, so that the queen is always on a square of her own color. That means that if you play the white pieces, then the queen will be on the bottom row, fourth square from the left, with the king on the fifth square from the left, and if you play the black pieces, then the king will be on the bottom row, fourth square from the left, and the queen will be on the fifth square from the left.
The player playing the white pieces is always the one to open the game. Given that the position of the king and queen is perfectly mirrored between white and black — or otherwise put, that your king and queen will always be on the same files as those of your opponent — this also means that your strategy has to be adapted to which side of the board you're playing.
The game can end in three manners: by checkmating your opponent, by resigning and thus conceding the game to your opponent, or as a draw. A draw in itself can be agreed upon between players at any point in the game, or is automatically accepted if the state of the board does not change within three consecutive moves from both players — in other words, if both players make the exact same moves three times in a row — or in the event of a stalemate, which happens if one of the players cannot make any legal move at all without putting his king in check in the process. A draw will also automatically be applied if both players no longer possess the required pieces for checkmating the opponent.
The game can go in an enormous variety of directions, depending on what color you're playing and what strategy you use, which is why there are still chess tournaments being held several times a year. It would be pointless if all permutations had already been tried, because grandmasters put a lot of time and effort into studying their opponents' strategies, as well as historical games between other grandmasters.
Nevertheless, the rules of the game are rigid — you can never make an illegal move. And so it is with mortal existence.