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How this site is actually built, what we've gotten wrong along the way, and how we caught it. Newest first.
A genuine, documented trap that wins material outright, hiding inside the single most popular move Black actually plays against this opening.
White's sharpest try against 1...e5, a two-pawn sacrifice for rapid development, and the real, well-tested path Black has to survive it.
A real pawn sacrifice with a documented 1918 upset over Akiba Rubinstein, checked against 12,720 modern games to see if it still holds up.
Bobby Fischer's real 1961 "bust" claim, checked against 16,167 real games, where his own recommended defense turns out to be less common than the sharper alternative most opponents actually play.
Four real gambits and sharp openings, checked directly against this site's own move-frequency data, no trap or refutation claim made without real data behind it.
A real branching-complexity difference, 13 options at one decision point versus 4 in comparable openings, plus five real, lower-rated 1.e4 alternatives.
Every genuine 1.e4 defense on this site, verified directly from each opening's actual first move, backed by 411,296 real games.
Five White openings whose recommended range genuinely, fully covers the 1200-1500 band, backed by 288,995 real games and real move-frequency data.
This site's opening library, built from 1,711,675 real games, broken down by what's actually verifiable: move frequency and Elo suitability, never win rate.
Sometimes an opening is chosen for one specific opponent, not for its own merits. Two real games where it worked, and one where it didn't.
One pawn move decides whether Black's light-squared bishop works for the rest of the game. How five different openings handle the same problem.
The London System's five most common mistakes are really one mistake: running a memorized setup instead of reading the position in front of you.
Two of the four most common Italian Game mistakes come from believing its quiet reputation. What the Giuoco Pianissimo actually asks of you.