Chess Glossary : Section V
Vacating Sacrifice
Also known as a “Clearance Sacrifice”, it’s a sacrificial maneuver played in order to clear a square for a different piece, belonging to the same army.
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Valve
Refers to a move that opens up one particular path or line (of squares) and closes another (as the Pawn or Piece moves forward, it blocks a pathway that had, until then, been open).
Variant
Also known as a “Chess Variant”, it’s a game that is like chess in some respects, but is slightly different – e.g. the board is different (might allow for 4 players, instead of the usual 2); the pieces might be different (or have different abilities); the rules might be different (such as Chess960, which allows the Pieces to be setup in a random order).
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Variation
1. An alternative line of play, most notably attributed to popular Chess Openings – such as in The French Defence, where you get different ways to develop your pieces, like in The Exchange Variation, The Advance Variation and The Tarrasch Variation.
2. Any alternative excuse, expertly delivered by the Chess Glossary Team to disguise the guilt of outright plagiarism, brought on by a seismic fit of