Trap in the opening
A trap in the opening is a move or setup that invites a natural-looking reply, often a grab of material, which then loses to a prepared tactic, so the side that falls for it is worse or lost within a few moves.
Also called: opening trap
Traps work because the losing move looks logical. A free pawn on offer, a developing move with an obvious threat or a quick attack on a weak point may hide a short tactic that turns the position upside down. In an opening, where pieces are still on their starting squares, those tactics usually involve a pin, a fork or a trick against the king.
A classic is Legal's mate: 1.e4 e5 2.Nf3 d6 3.Bc4 Bg4 4.Nc3 g6 5.Nxe5 Bxd1 6.Bxf7+ Ke7 7.Nd5 is checkmate. Black took a queen and lost in two more moves.
A trap is worth playing only if the line is sound even when Black avoids it. A move that sets a trap but gives you a worse position against correct play is a gamble, and strong players will simply punish it.
To avoid traps, check every capture and every offered pawn. Ask what the opponent's last move does, which pieces it opens, and whether a sacrifice changes that. If something is free, assume it is not until you prove it.
A typical mistake is grabbing material while your king is still in the center, since any check or discovered attack hurts more there.
Tip: learn five or six well-known traps in your repertoire from both sides, because every trap has a defender's version as well.
Also worth reading is Early queen move. An early queen move is bringing the queen out in the first few moves, before the minor pieces are developed, which usually loses time because the opponent can attack it with developing moves.
Also worth reading is Mirror defense. A mirror defense is a strategy where Black copies White's moves, keeping a symmetrical position, and it works only until a concrete tactic or a forcing sequence makes the copying fail.
A neighboring idea is Refutation. A refutation is a reply that shows an opening move, line or idea to be unsound by punishing it concretely, so that the side that chose it ends up worse or lost with best play.
Opening ideas such as "Trap in the opening" are easier to keep when they are tested on your own games, which is what a first lesson with George Li begins with.
Related terms
A refutation is a reply that shows an opening move, line or idea to be unsound by punishing it concretely, so that the side that chose it ends up worse or lost with best play.
An early queen move is bringing the queen out in the first few moves, before the minor pieces are developed, which usually loses time because the opponent can attack it with developing moves.
Legal's mate is an opening trap in which White lets Black capture the queen and then checkmates with a bishop and two knights, punishing a Black player who takes the offered piece.
A gambit is an opening offer of material, nearly always a pawn, that the offering side makes on purpose in return for time, open lines or central control, betting that activity will matter more than the missing pawn.
A mirror defense is a strategy where Black copies White's moves, keeping a symmetrical position, and it works only until a concrete tactic or a forcing sequence makes the copying fail.
Openings where it occurs
Guides that go further
Most popular chess openings and win rates
The most played openings, how often White wins, and how the numbers change with rating, computed from public games.
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
A game review, a read on your level and a written study plan from George Li.
Want to spot this in your own games?
A first lesson starts with your games: George reviews them and builds a study plan around what he finds.