Blackburne Shilling Gambit
chess opening 1. e4 e5 2. Nf3 Nc6 3. Bc4 4. Nd4

The Blackburne Shilling Gambit is the name facetiously given to a dubious chess opening, derived from an offshoot of the Italian Game, that begins:
1. e4 e5
2. Nf3 Nc6
3. Bc4 Nd4?!
It is also sometimes referred to as the Kostić Gambit after the Serbian grandmaster Borislav Kostić, who played it in the early 20th century.
History
Wilhelm Steinitz made the first known mention of this line, noting it in 1895 in the Addenda to his Modern Chess Instructor, Part II. The earliest game with the opening on chessgames.com, Dunlop–Hicks, New Zealand Championship, dates from 1911. Another early game, mentioned by Bill Wall, is Muhlock–Kostić, Cologne, 1912.
The trap beginning 4.Nxe5? "continues to catch victims, including two in successive rounds at Blackpool 1987".
Analysis
Black's third move is a weak, time-wasting move.
Begin with the source’s own compact description: “Blackburne Shilling Gambit” is chess opening 1. e4 e5 2. Nf3 Nc6 3. Bc4 4. Nd4. The dossier treats that line as a proposition to test through Blackburne, Shilling and Gambit, not as a finished interpretation.
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The phrase “chess opening 1. e4 e5 2. Nf3 Nc6 3. Bc4 4. Nd4” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Dec 11, 2025. The linked authority identifier is Q138612. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1895, 1911, 1912 and 1987.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Blackburne Shilling Gambit” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.