{
  "pack_format_version": 3,
  "slug": "queens-gambit-declined-essentials-black",
  "title": "The Queen's Gambit Declined: Essentials (Black Repertoire)",
  "author_name": "Theo van Stratum",
  "version": 1,
  "description": "A Black repertoire for the Queen's Gambit Declined (1.d4 d5 2.c4 e6), the most solid and reliable classical answer to 1.d4. Includes the Orthodox/Classical main line against 4.Bg5 and its Lasker Defence sideline, the Exchange Variation (4.cxd5 exd5) with its long-term plans for both sides, the Cambridge Springs (4...Nbd7 and ...Qa5, with the key overloaded-knight tactic that punishes a careless 7.cxd5), and the modern Tartakower Variation with its queenside fianchetto.",
  "content_types": [
    "lines"
  ],
  "price_cents": null,
  "lines": [
    {
      "name": "Queen's Gambit Declined: Black's Orthodox Main Line",
      "side": "black",
      "eco": "D55",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "e7e6",
        "b1c3",
        "g8f6",
        "c1g5",
        "f8e7",
        "e2e3",
        "e8g8",
        "g1f3",
        "b8d7",
        "a1c1",
        "c7c6",
        "f1d3",
        "d5c4",
        "d3c4",
        "f6d5",
        "g5e7",
        "d8e7"
      ],
      "annotations": {
        "3": {
          "note": "Declining the gambit: rather than grabbing the c4-pawn immediately, Black supports the centre and accepts a slightly passive-looking but very solid structure.",
          "format": "markdown"
        },
        "7": {
          "note": "Simple, standard development -- there's no need to do anything more ambitious yet.",
          "format": "markdown"
        },
        "11": {
          "note": "Supporting the centre and preparing ...c6, rather than releasing the tension with ...dxc4 immediately.",
          "format": "markdown"
        },
        "13": {
          "note": "Reinforcing d5 a second time before finally giving up the centre.",
          "format": "markdown"
        },
        "15": {
          "note": "Releasing the central tension on Black's own terms, now that development is well advanced.",
          "format": "markdown"
        },
        "17": {
          "note": "Centralising the knight on a genuinely strong square -- it's attacked twice, by White's own knight and bishop, but defended twice over by the c6- and e6-pawns, so there's nothing to fear from it.",
          "format": "markdown"
        },
        "19": {
          "note": "Recapturing toward the centre with an even, perfectly comfortable position.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "e2e3",
            "e8g8",
            "g1f3",
            "h7h6",
            "g5h4",
            "f6e4",
            "h4e7",
            "d8e7"
          ],
          "annotations": {
            "3": {
              "note": "The Lasker Defence: simplifying immediately rather than developing the other knight first -- a reliable way to take some of the sting out of White's development lead without much risk.",
              "format": "markdown"
            },
            "5": {
              "note": "The point of the whole idea: this knight attacks the one on c3 (defended once, by the b2-pawn, so nothing is actually hanging either way) and invites a further simplifying trade.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Declined: Black vs the Exchange Variation",
      "side": "black",
      "eco": "D35",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "e7e6",
        "b1c3",
        "g8f6",
        "c4d5",
        "e6d5",
        "c1g5",
        "f8e7",
        "e2e3",
        "e8g8",
        "f1d3",
        "b8d7",
        "d1c2",
        "c7c6",
        "g1f3",
        "f8e8",
        "e1g1",
        "d7f8"
      ],
      "annotations": {
        "7": {
          "note": "Recapturing toward the centre, reaching a symmetrical pawn structure. White will typically aim for a minority attack with b4 and b5 against the queenside pawns later on; Black's own plan is usually to play actively in the centre and on the kingside rather than purely react.",
          "format": "markdown"
        },
        "13": {
          "note": "Solid, standard development, supporting a future ...c6/...Re8 set-up.",
          "format": "markdown"
        },
        "15": {
          "note": "Shoring up the centre before White's own minority attack gets going.",
          "format": "markdown"
        },
        "17": {
          "note": "Preparing to meet White's central or kingside ambitions with pressure down the e-file.",
          "format": "markdown"
        },
        "19": {
          "note": "Re-routing the knight toward g6 or e6, both useful outposts once play opens up, rather than leaving it on d7 where it does little.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 10,
          "moves": [
            "e2e3",
            "c7c6",
            "f1d3",
            "e7d6",
            "g1f3",
            "e8g8",
            "d1c2",
            "f8e8"
          ],
          "annotations": {
            "1": {
              "note": "A more active alternative to ...O-O followed by ...Nbd7/...c6: securing the centre with ...c6 right away and aiming the bishop at d6 instead of the more modest e7.",
              "format": "markdown"
            },
            "3": {
              "note": "More actively placed than on e7, though it does mean White's bishop on g5 now genuinely pins the knight on f6 to the queen on d8, since the e7-square it would otherwise sit on is empty.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Declined: Black's Cambridge Springs",
      "side": "black",
      "eco": "D52",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "e7e6",
        "b1c3",
        "g8f6",
        "c1g5",
        "b8d7",
        "e2e3",
        "c7c6",
        "g1f3",
        "d8a5",
        "a2a3",
        "f8d6",
        "c4c5",
        "d6c7",
        "f1d3",
        "e8g8",
        "e1g1",
        "f8e8"
      ],
      "annotations": {
        "7": {
          "note": "Preparing the Cambridge Springs idea: developing the knight to d7 rather than f6's natural partner, keeping the queen's route to a5 open.",
          "format": "markdown"
        },
        "9": {
          "note": "Supporting d5 a second time, and -- crucially -- keeping the queen's diagonal to a5 clear for next move.",
          "format": "markdown"
        },
        "11": {
          "note": "The point of the whole setup: the queen attacks the knight on c3 along the a5-c3 diagonal. Nothing is actually hanging -- the knight is defended once, by the b2-pawn -- but White has to take this into account on every move from here, especially before any trade on d5.",
          "format": "markdown"
        },
        "13": {
          "note": "Developing actively, with an eye on a future ...Bb4 if White ever allows it -- that bishop move would pin the knight on c3 to the king.",
          "format": "markdown"
        },
        "15": {
          "note": "Retreating in the face of the pawn's advance; the bishop still has a useful diagonal from c7.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 12,
          "moves": [
            "c4d5",
            "f6d5",
            "d1d3",
            "d5c3",
            "b2c3"
          ],
          "annotations": {
            "1": {
              "note": "The critical point of the whole system: if White resolves the tension on d5 without first dealing with the pressure on c3, the knight ends up attacked twice (by the queen on a5 and now this knight too) against only one defender, the b2-pawn.",
              "format": "markdown"
            },
            "2": {
              "note": "Necessary -- adding a second defender to c3 before the knight can simply be won.",
              "format": "markdown"
            },
            "4": {
              "note": "A fair, balanced simplification rather than a trick in either direction -- the knight on c3 ends up defended exactly as many times as it was attacked, so there's no follow-up (in particular, ...Qxc3+ here would just walk the queen into White's own queen on d3, which guards that square along the third rank).",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Queen's Gambit Declined: Black's Tartakower Variation",
      "side": "black",
      "eco": "D58",
      "moves": [
        "d2d4",
        "d7d5",
        "c2c4",
        "e7e6",
        "b1c3",
        "g8f6",
        "c1g5",
        "f8e7",
        "e2e3",
        "e8g8",
        "g1f3",
        "h7h6",
        "g5h4",
        "b7b6",
        "f1e2",
        "c8b7",
        "e1g1",
        "b8d7",
        "c4d5",
        "f6d5"
      ],
      "annotations": {
        "11": {
          "note": "A useful little move before committing to a plan: asking the bishop the question and ruling out any future Bxf6 ideas for free.",
          "format": "markdown"
        },
        "13": {
          "note": "The Tartakower's hallmark: fianchettoing the bishop at once, aiming it down the long diagonal, rather than developing it more modestly to d7.",
          "format": "markdown"
        },
        "17": {
          "note": "Completing development. White's own long diagonal bishop is pointed the other way on c4-ish squares in some lines, but here on e2 it's doing nothing urgent either.",
          "format": "markdown"
        },
        "19": {
          "note": "Recapturing toward the centre; the bishop on b7's long diagonal is currently blocked by White's own knight on f3, so there's no immediate tactic to worry about, just a sound, flexible structure.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 12,
          "moves": [
            "c4d5",
            "f6d5",
            "g5e7",
            "d8e7",
            "c3d5",
            "e6d5"
          ],
          "annotations": {
            "0": {
              "note": "If White resolves the central tension immediately rather than waiting for ...b6 first.",
              "format": "markdown"
            },
            "1": {
              "note": "Once the knight leaves f6, White's bishop on g5 is suddenly attacked twice over -- by the h6-pawn and now by the bishop on e7 as well, along the newly-open diagonal -- so simply retreating isn't good enough for White; trading it off deals with both attackers at once.",
              "format": "markdown"
            },
            "4": {
              "note": "A natural simplification into a symmetrical structure with chances for both sides.",
              "format": "markdown"
            }
          }
        }
      ]
    }
  ],
  "woodpecker_sets": [],
  "endgame_positions": []
}