The answer is quite simple

The end result of a tic tac toe (or Xs and Os) game.

Why?

A paper pound of wrong and round,

The game is played on paper with Xs (wrong) and Os (round). Pound having to do with # which is the shape of a tic tac toe board.

A minty piggy named.

A tic tac is minty. Then there's piggy toe!

Dividing nine, some yours, some mine,

The game is split us into 9 slots. Some slots are owned my you, some by your friend, Xs and Os!

A syzygy is claimed.

In astronomy a syzygy is the alignment of 3 celestial bodies! In other words, 3 in a row is achieved, or a "tic-tac-toe" Win!

One note; games can end in ties, so the last line is arguably correct.

The answer is quite simple

The end result of a tic tac toe (or Xs and Os, Noughts/Knaughts and Crosses, etc. See; http://en.m.wikipedia.org/wiki/Tic-tac-toe#English_names) game.

Why?

A paper pound of wrong and round,

The game is played on paper with Xs (wrong) and Os (round). Pound having to do with # which is the shape of a tic tac toe board.

A minty piggy named.

A tic tac is minty. Then there's piggy toe!

Dividing nine, some yours, some mine,

The game is split us into 9 slots. Some slots are owned by you, some by your friend, Xs and Os!

A syzygy is claimed.

In astronomy a syzygy is the alignment of 3 celestial bodies! In other words, 3 in a row is achieved, or a "tic-tac-toe" Win!

*One note [POSSIBLE SPOILER];

Games can end in ties, so the last line is arguably correct.

The answer is quite simple

The end result of a tic tac toe (or Xs and Os) game.

Why?

A paper pound of wrong and round,

The game is played on paper with Xs (wrong) and Os (round)

A minty piggy named.

No idea yet.

Dividing nine, some yours, some mine,

The game is split us into 9 slots. Some slots are owned my you, some by your friend, Xs and Os!

A syzygy is claimed.

In astronomy a syzygy is the alignment of 3 celestial bodies! In other words, 3 in a row is achieved, or a "tic-tac-toe" Win!

One note; games can end in ties, so the last line is arguably correct.

The answer is quite simple

The end result of a tic tac toe (or Xs and Os) game.

Why?

A paper pound of wrong and round,

The game is played on paper with Xs (wrong) and Os (round). Pound having to do with # which is the shape of a tic tac toe board.

A minty piggy named.

A tic tac is minty. Then there's piggy toe!

Dividing nine, some yours, some mine,

The game is split us into 9 slots. Some slots are owned my you, some by your friend, Xs and Os!

A syzygy is claimed.

In astronomy a syzygy is the alignment of 3 celestial bodies! In other words, 3 in a row is achieved, or a "tic-tac-toe" Win!

One note; games can end in ties, so the last line is arguably correct.