{
  "pack_format_version": 3,
  "slug": "modern-defence-essentials-white",
  "title": "The Modern Defence: Essentials (White Repertoire)",
  "author_name": "Theo van Stratum",
  "version": 1,
  "description": "A White repertoire for meeting the Modern Defence (1.e4 g6, fianchettoing before committing to a central pawn or the king's knight), organised by approach. Includes the quiet Classical Variation, the clamping Averbakh System, the space-gaining Austrian Attack, and the aggressive 150 Attack.",
  "content_types": [
    "lines"
  ],
  "price_cents": null,
  "lines": [
    {
      "name": "Modern Defence: The Classical Variation",
      "side": "white",
      "eco": "B06",
      "moves": [
        "e2e4",
        "g7g6",
        "d2d4",
        "f8g7",
        "b1c3",
        "d7d6",
        "g1f3",
        "g8f6",
        "f1e2",
        "e8g8",
        "e1g1",
        "c7c6",
        "f1e1",
        "a7a6",
        "a2a4",
        "b8d7",
        "e2f1",
        "b7b6",
        "h2h3",
        "c8b7"
      ],
      "annotations": {
        "0": {
          "note": "Open-game central space, inviting the Modern Defence's maximally flexible, hypermodern reply.",
          "format": "markdown"
        },
        "2": {
          "note": "Building a full classical centre, since Black hasn't yet committed to a central structure of their own.",
          "format": "markdown"
        },
        "4": {
          "note": "Developing naturally, adding pressure to d5 and preparing to meet Black's own central play.",
          "format": "markdown"
        },
        "6": {
          "note": "Developing the king's knight, keeping the quiet Classical set-up rather than the sharper 150 Attack or Austrian Attack tries.",
          "format": "markdown"
        },
        "8": {
          "note": "A modest developing square for the bishop, keeping the position solid.",
          "format": "markdown"
        },
        "10": {
          "note": "Castling into safety.",
          "format": "markdown"
        },
        "12": {
          "note": "A useful rook lift, supporting the centre and keeping options open about a future e5 push.",
          "format": "markdown"
        },
        "14": {
          "note": "Restraining Black's own queenside expansion before it starts.",
          "format": "markdown"
        },
        "16": {
          "note": "Tucking the bishop back onto its original square, out of the way of any future g-pawn ideas and keeping the position flexible.",
          "format": "markdown"
        },
        "18": {
          "note": "A useful prophylactic move, taking the g4 square away from Black's pieces.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "h2h3",
            "e8g8",
            "f1e2",
            "c7c6",
            "e1g1"
          ],
          "annotations": {
            "0": {
              "note": "A useful prophylactic move played before developing the bishop, taking the g4 square away from Black's pieces.",
              "format": "markdown"
            },
            "4": {
              "note": "Castling into safety, reaching the same position as the main line via a different move order.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Modern Defence: The Averbakh System",
      "side": "white",
      "eco": "B06",
      "moves": [
        "e2e4",
        "g7g6",
        "d2d4",
        "f8g7",
        "c2c4",
        "d7d6",
        "b1c3",
        "g8f6",
        "f1e2",
        "e8g8",
        "g1f3",
        "b8c6",
        "e1g1",
        "e7e5",
        "d4d5",
        "c6b8",
        "h2h3",
        "a7a5",
        "f1e1",
        "b8a6"
      ],
      "annotations": {
        "0": {
          "note": "Open-game central space, inviting the Modern Defence's maximally flexible, hypermodern reply.",
          "format": "markdown"
        },
        "2": {
          "note": "Building a full classical centre.",
          "format": "markdown"
        },
        "4": {
          "note": "The point of the Averbakh System: adding a second central pawn to clamp down on Black's own ...d5 and ...e5 ideas before they can even be considered, rather than simply developing pieces.",
          "format": "markdown"
        },
        "6": {
          "note": "Developing naturally, now that the centre is fully secured.",
          "format": "markdown"
        },
        "8": {
          "note": "A modest developing square for the bishop.",
          "format": "markdown"
        },
        "10": {
          "note": "Developing the king's knight.",
          "format": "markdown"
        },
        "12": {
          "note": "Castling into safety.",
          "format": "markdown"
        },
        "14": {
          "note": "Gaining space in the centre and kicking Black's knight away from c6 with tempo.",
          "format": "markdown"
        },
        "16": {
          "note": "A useful prophylactic move, taking the g4 square away from Black's pieces.",
          "format": "markdown"
        },
        "18": {
          "note": "A useful rook lift, supporting the centre and keeping options open about a future f4 or b4 push.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "g1f3",
            "e8g8",
            "f1e2",
            "c7c6",
            "e1g1"
          ],
          "annotations": {
            "0": {
              "note": "Developing the knight before the bishop, a flexible alternative move order.",
              "format": "markdown"
            },
            "4": {
              "note": "Castling into safety, reaching the same position as the main line via a different move order.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Modern Defence: The Austrian Attack",
      "side": "white",
      "eco": "B06",
      "moves": [
        "e2e4",
        "g7g6",
        "d2d4",
        "f8g7",
        "b1c3",
        "d7d6",
        "f2f4",
        "g8f6",
        "g1f3",
        "e8g8",
        "f1d3",
        "b8c6",
        "e1g1",
        "a7a6",
        "a2a4",
        "a8b8",
        "d1e1",
        "b7b6",
        "g1h1",
        "c8b7"
      ],
      "annotations": {
        "0": {
          "note": "Open-game central space, inviting the Modern Defence's maximally flexible, hypermodern reply.",
          "format": "markdown"
        },
        "2": {
          "note": "Building a full classical centre.",
          "format": "markdown"
        },
        "4": {
          "note": "Developing naturally.",
          "format": "markdown"
        },
        "6": {
          "note": "The point of the Austrian Attack: grabbing extra central space and preparing a future e5 push, the most ambitious of White's main tries against the Modern Defence.",
          "format": "markdown"
        },
        "8": {
          "note": "Developing the king's knight.",
          "format": "markdown"
        },
        "10": {
          "note": "A natural developing square for the bishop, eyeing the kingside and supporting a future e5 advance.",
          "format": "markdown"
        },
        "12": {
          "note": "Castling into safety.",
          "format": "markdown"
        },
        "14": {
          "note": "Restraining Black's own queenside expansion before it starts.",
          "format": "markdown"
        },
        "16": {
          "note": "Repositioning the queen, keeping it flexible and ready to support the thematic e5 break without blocking the rooks.",
          "format": "markdown"
        },
        "18": {
          "note": "A useful prophylactic move, tucking the king into the corner before the position opens up further.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "f1d3",
            "e8g8",
            "g1f3",
            "b8c6",
            "e1g1"
          ],
          "annotations": {
            "0": {
              "note": "Developing the bishop before the knight, a flexible alternative move order.",
              "format": "markdown"
            },
            "4": {
              "note": "Castling into safety, reaching the same position as the main line via a different move order.",
              "format": "markdown"
            }
          }
        }
      ]
    },
    {
      "name": "Modern Defence: The 150 Attack",
      "side": "white",
      "eco": "B06",
      "moves": [
        "e2e4",
        "g7g6",
        "d2d4",
        "f8g7",
        "b1c3",
        "d7d6",
        "c1e3",
        "g8f6",
        "d1d2",
        "e8g8",
        "f2f3",
        "c7c6",
        "g2g4",
        "b7b5",
        "h2h4",
        "b8d7",
        "e1c1",
        "e7e5",
        "g1e2",
        "a7a5"
      ],
      "annotations": {
        "0": {
          "note": "Open-game central space, inviting the Modern Defence's maximally flexible, hypermodern reply.",
          "format": "markdown"
        },
        "2": {
          "note": "Building a full classical centre.",
          "format": "markdown"
        },
        "4": {
          "note": "Developing naturally.",
          "format": "markdown"
        },
        "6": {
          "note": "The point of the 150 Attack: developing the bishop to e3 and preparing to meet Black's fianchetto with a direct kingside pawn storm rather than quiet development.",
          "format": "markdown"
        },
        "8": {
          "note": "Supporting the bishop and preparing to castle queenside, the hallmark set-up of the 150 Attack.",
          "format": "markdown"
        },
        "10": {
          "note": "A useful supporting move, protecting e4 and keeping the knight on c3 flexible before the pawn storm begins in earnest.",
          "format": "markdown"
        },
        "12": {
          "note": "Beginning the thematic kingside pawn storm, gaining space and preparing g5 to challenge Black's knight.",
          "format": "markdown"
        },
        "14": {
          "note": "Continuing the storm, preparing a further advance and opening lines toward Black's king.",
          "format": "markdown"
        },
        "16": {
          "note": "Castling queenside, tucking the king away from the very storm White is about to unleash on the other wing.",
          "format": "markdown"
        },
        "18": {
          "note": "Developing the last knight, keeping it flexible between g3 and f4 depending on how the attack develops.",
          "format": "markdown"
        }
      },
      "variations": [
        {
          "branch_ply": 8,
          "moves": [
            "f2f3",
            "e8g8",
            "d1d2",
            "c7c6",
            "g2g4"
          ],
          "annotations": {
            "0": {
              "note": "A useful supporting move played before developing the queen, protecting e4 first.",
              "format": "markdown"
            },
            "4": {
              "note": "Beginning the thematic kingside pawn storm, reaching a near-identical position to the main line via a different move order.",
              "format": "markdown"
            }
          }
        }
      ]
    }
  ],
  "woodpecker_sets": [],
  "endgame_positions": []
}