Illegal Move

An Illegal move is when a move is made that goes against the rules of chess or how pieces move.

An Example of an Illegal Move is shown below:

All pieces starting out

A Black Bishop moving over a Black Pawn on first move

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There are 2 thing’s that makes what happened Illegal in chess.

1. White always moves first.
2. A Bishop can’t move over other pieces. Only a Knight can do that.

Below is another example of an Illegal Move:

Black’s turn, Black Rook is planning to be moved to put the White King in Check

The Black Rook moves and attempts to put White King in Check

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What black did was an Illegal Move because making that move would put black in Checkmate, therefore the Rook would have to move back, and black would have to do a different move.