{
  "pack_format_version": 3,
  "slug": "queens-gambit-accepted-essentials-white",
  "title": "The Queen's Gambit Accepted: Essentials (White Repertoire)",
  "author_name": "Theo van Stratum",
  "version": 1,
  "description": "A White repertoire covering the main approaches after 1.d4 d5 2.c4 dxc4. Includes the Classical main line (recapturing with 5.Bxc4 and meeting Black's central counter), the critical 3...a6 system where Black tries to hold onto the extra pawn with ...b5, the aggressive Central Variation (3.e4), and the early ...Bg4 pin on the f3-knight.",
  "content_types": [
    "lines"
  ],
  "price_cents": null,
  "lines": [
    {
      "name": "Queen's Gambit Accepted: The Classical Main Line",
      "side": "white",
      "eco": "D27",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "d5c4",
        "g1f3",
        "g8f6",
        "e2e3",
        "e7e6",
        "f1c4",
        "c7c5",
        "e1g1",
        "a7a6",
        "d1e2",
        "b7b5",
        "c4b3",
        "c8b7",
        "f1d1",
        "b8d7",
        "b1d2",
        "a8c8"
      ],
      "annotations": {
        "2": {
          "note": "The gambit pawn: offering c4 to pull Black's centre pawns forward. There's no need to rush to win it back -- it isn't going anywhere Black can defend easily yet.",
          "format": "markdown"
        },
        "4": {
          "note": "Simple development before committing to how the pawn comes back.",
          "format": "markdown"
        },
        "8": {
          "note": "Recapturing. The pawn was always coming back here sooner or later -- Black has no way to hold onto it safely once the bishop can reach c4 directly.",
          "format": "markdown"
        },
        "10": {
          "note": "Castling before deciding how to meet Black's central counter-strike.",
          "format": "markdown"
        },
        "14": {
          "note": "Stepping out of the way of ...c4, which would otherwise hit the bishop with tempo, and keeping an eye on f7 for later.",
          "format": "markdown"
        },
        "16": {
          "note": "Centralising the rook in anticipation of the central tension on d4 being resolved sooner or later.",
          "format": "markdown"
        },
        "18": {
          "note": "Completing development; the knight has useful squares on c4 and e4 ahead of it once the position opens up.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 10,
          "moves": [
            "e1g1",
            "b8c6",
            "d1e2",
            "c5d4",
            "e3d4",
            "f8e7",
            "f1d1",
            "e8g8"
          ],
          "annotations": {
            "4": {
              "note": "A simpler, more classical approach than the main line's queenside expansion: trading off the central tension immediately and accepting an isolated d4-pawn, which is well defended here -- attacked twice (by the knight on c6 and the queen on d8) and defended twice in turn (by the rook on d1 and the knight on f3).",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Accepted: Meeting 3...a6 (Black Holds the Pawn)",
      "side": "white",
      "eco": "D22",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "d5c4",
        "g1f3",
        "a7a6",
        "b1c3",
        "b7b5",
        "e2e4",
        "c8b7",
        "c1g5",
        "g8f6",
        "e4e5",
        "f6d5",
        "g5d2",
        "e7e6",
        "f1e2",
        "f8e7",
        "e1g1",
        "e8g8"
      ],
      "annotations": {
        "5": {
          "note": "Preparing ...b5, which will genuinely defend the c4-pawn once it's played -- this is the whole point of delaying ...Nf6 or ...e6. The bishop on f1 can reach c4 directly at any point, so Black has to get the defensive pawn there first.",
          "format": "markdown"
        },
        "7": {
          "note": "Now the pawn really is held -- c4 is defended once, by this pawn, and nothing of White's attacks it. Taking it with the bishop would just lose the bishop for a pawn.",
          "format": "markdown"
        },
        "8": {
          "note": "Rather than spend more time trying to win the pawn back immediately, claiming the centre and trusting that the lead in development is worth at least as much -- a standard, sound positional pawn sacrifice rather than a forced recovery.",
          "format": "markdown"
        },
        "12": {
          "note": "Gaining further space. The knight on f6 has to move, and wherever it goes, White's development lead keeps growing.",
          "format": "markdown"
        },
        "14": {
          "note": "Adding a second defender to c3, which the knight on d5 was attacking (nothing was actually hanging -- the b2-pawn already covered it -- but there's no reason to allow any tricks later).",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "a2a4",
            "c8b7"
          ],
          "annotations": {
            "0": {
              "note": "Challenging the pawn chain directly rather than playing in the centre. This doesn't win the pawn back on the spot either -- b5 is defended once (by the a6-pawn) and attacked twice (by this pawn and the knight on c3), but the knight capturing would simply lose a piece for a pawn, so in practice this just offers a trade of a- for b-pawns if Black allows it.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Accepted: The Central Variation",
      "side": "white",
      "eco": "D20",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "d5c4",
        "e2e4",
        "e7e5",
        "g1f3",
        "e5d4",
        "f3d4",
        "b8c6",
        "d4c6",
        "b7c6",
        "b1c3",
        "g8f6",
        "f1c4",
        "f8e7",
        "d1f3",
        "e8g8",
        "c1e3",
        "d8d6"
      ],
      "annotations": {
        "4": {
          "note": "The most aggressive try: building a big centre immediately rather than developing a piece first. Black's most natural reply is to strike straight back rather than let this pawn stand unchallenged.",
          "format": "markdown"
        },
        "8": {
          "note": "Recapturing toward the centre with the knight.",
          "format": "markdown"
        },
        "9": {
          "note": "The critical response: this attacks the knight on d4 a second time (alongside the queen on d8), so White has to deal with it immediately rather than developing on automatically.",
          "format": "markdown"
        },
        "10": {
          "note": "Trading off the attacker is the simplest way to deal with the problem -- the alternative retreats all concede the centre without gaining anything in return.",
          "format": "markdown"
        },
        "14": {
          "note": "Finally recapturing the original gambit pawn -- there was no rush for this while development was still unfinished, and Black's doubled c-pawns from the earlier exchange are a long-term structural plus regardless of when it happens.",
          "format": "markdown"
        },
        "16": {
          "note": "Developing actively; this also adds a second defender to the knight on d4's old square, although nothing is currently hanging there either way.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 9,
          "moves": [
            "f8b4",
            "b1c3",
            "g8f6",
            "f1c4",
            "e8g8"
          ],
          "annotations": {
            "0": {
              "note": "Check first, rather than developing the other knight immediately.",
              "format": "markdown"
            },
            "1": {
              "note": "Blocking the check with the knight rather than the bishop -- a bishop on d2 would have sat on the queen's own defensive line to d4 and simply left the knight there hanging to ...Qxd4. This way the queen's defence of it stays intact.",
              "format": "markdown"
            },
            "4": {
              "note": "Castling at last, stepping the king off the b4-e1 diagonal and freeing the knight on c3 from the pin it's been sitting under since move 6.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Accepted: Meeting the Early ...Bg4",
      "side": "white",
      "eco": "D24",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "d5c4",
        "g1f3",
        "g8f6",
        "e2e3",
        "c8g4",
        "f1c4",
        "e7e6",
        "e1g1",
        "b8d7",
        "d1b3",
        "g4f3",
        "g2f3",
        "b7b6",
        "f1d1",
        "f8d6",
        "b1c3",
        "e8g8"
      ],
      "annotations": {
        "7": {
          "note": "A real pin, not just a developing move: with the pawn already on e3, the diagonal to the queen on d1 is completely open, so the knight on f3 genuinely can't move.",
          "format": "markdown"
        },
        "8": {
          "note": "Simply recapturing the gambit pawn; the pin on f3 doesn't stop this, since the bishop isn't on that diagonal.",
          "format": "markdown"
        },
        "12": {
          "note": "A double-purpose move: develops the queen and attacks the undefended b7-pawn down the open b-file at the same time, so Black has to account for it on the very next move.",
          "format": "markdown"
        },
        "14": {
          "note": "Recapturing toward the kingside rather than with the e-pawn -- this leaves the structure a little loose but keeps the extra pawn-recapture tempo and an open g-file for later.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "h2h3",
            "g4f3",
            "d1f3",
            "e7e6",
            "f1c4",
            "b8d7"
          ],
          "annotations": {
            "0": {
              "note": "Asking the question immediately rather than recapturing the pawn first.",
              "format": "markdown"
            },
            "1": {
              "note": "Trading rather than retreating -- once challenged, the bishop doesn't have a square that avoids being eventually chased further for no gain, so cashing in the pin is simplest.",
              "format": "markdown"
            },
            "2": {
              "note": "Recapturing with the queen instead of the pawn, keeping the kingside pawn structure intact; the bishop on f1 is still free to recapture the gambit pawn next move.",
              "format": "markdown"
            }
          }
        }
      ]
    }
  ],
  "woodpecker_sets": [],
  "endgame_positions": []
}