Blunder Table

From Geoff Chandler, of Chandler Cornered – its application to the play and enjoyment of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) is clear:

Here is a one-move blunder table showing how severe the blunder needs to be in a game between two players of the same grade.

All players should be able to spot their opponent leaving a mate in one on.

A 1200 player should win if an opponent blunders a Queen or a Rook. But not necessarily if they pick up a Bishop or Knight.

1500 players often convert piece-up games into a win, but this is not the case if a pawn or two up.

An 1800 player usually wins if they are two pawns up.

In a game between two 2000+ players a blundered pawn is usually enough to win.