[
  {
    "name": "King's Gambit Accepted: King's Knight's Gambit",
    "slug": "king-s-gambit-accepted-king-s-knight-s-gambit",
    "eco": "C34",
    "eval_cp": -79,
    "roi_u1200": 5.29,
    "roi_2000_plus": -1.41,
    "decay": 6.7
  },
  {
    "name": "King's Gambit: exf4",
    "slug": "king-s-gambit-exf4",
    "eco": "C30",
    "eval_cp": -74,
    "roi_u1200": 5.24,
    "roi_2000_plus": -1.46,
    "decay": 6.7
  },
  {
    "name": "Elephant Gambit",
    "slug": "elephant-gambit",
    "eco": "C40",
    "eval_cp": 92,
    "roi_u1200": 1.68,
    "roi_2000_plus": -4.92,
    "decay": 6.6
  },
  {
    "name": "Zukertort Opening: Lemberger Gambit: e5",
    "slug": "zukertort-opening-lemberger-gambit-e5",
    "eco": "A05",
    "eval_cp": 50,
    "roi_u1200": 3.8,
    "roi_2000_plus": -1.7,
    "decay": 5.5
  },
  {
    "name": "Zukertort Opening: Ross Gambit: e4",
    "slug": "zukertort-opening-ross-gambit-e4",
    "eco": "A04",
    "eval_cp": 53,
    "roi_u1200": 2.77,
    "roi_2000_plus": -2.33,
    "decay": 5.1
  },
  {
    "name": "King's Gambit: Nc6",
    "slug": "king-s-gambit-nc6",
    "eco": "C30",
    "eval_cp": 35,
    "roi_u1200": 3.15,
    "roi_2000_plus": -1.55,
    "decay": 4.7
  },
  {
    "name": "Zukertort Opening: Tennison Gambit: e6",
    "slug": "zukertort-opening-tennison-gambit-e6",
    "eco": "A06",
    "eval_cp": 28,
    "roi_u1200": -1.38,
    "roi_2000_plus": -5.98,
    "decay": 4.6
  },
  {
    "name": "King's Gambit",
    "slug": "king-s-gambit",
    "eco": "C30",
    "eval_cp": -66,
    "roi_u1200": 3.16,
    "roi_2000_plus": -1.14,
    "decay": 4.3
  },
  {
    "name": "Center Game: von der Lasa Gambit: Nc6",
    "slug": "center-game-von-der-lasa-gambit-nc6",
    "eco": "C21",
    "eval_cp": -1,
    "roi_u1200": 4.81,
    "roi_2000_plus": 0.61,
    "decay": 4.2
  },
  {
    "name": "Scotch Gambit",
    "slug": "scotch-gambit",
    "eco": "C44",
    "eval_cp": 7,
    "roi_u1200": 4.73,
    "roi_2000_plus": 0.53,
    "decay": 4.2
  },
  {
    "name": "Bird Opening: From's Gambit: e4",
    "slug": "bird-opening-from-s-gambit-e4",
    "eco": "A02",
    "eval_cp": -52,
    "roi_u1200": 3.12,
    "roi_2000_plus": -0.98,
    "decay": 4.1
  },
  {
    "name": "King's Gambit Accepted",
    "slug": "king-s-gambit-accepted",
    "eco": "C33",
    "eval_cp": -56,
    "roi_u1200": 3.16,
    "roi_2000_plus": -0.94,
    "decay": 4.1
  },
  {
    "name": "Queen's Gambit Accepted: Old Variation",
    "slug": "queen-s-gambit-accepted-old-variation",
    "eco": "D20",
    "eval_cp": 25,
    "roi_u1200": 4.95,
    "roi_2000_plus": 1.05,
    "decay": 3.9
  },
  {
    "name": "Scandinavian Defense: Blackburne-Kloosterboer Gambit: Nf3",
    "slug": "scandinavian-defense-blackburne-kloosterboer-gambit-nf3",
    "eco": "B01",
    "eval_cp": 27,
    "roi_u1200": -2.77,
    "roi_2000_plus": -6.47,
    "decay": 3.7
  },
  {
    "name": "Queen's Gambit Accepted: Saduleto Variation",
    "slug": "queen-s-gambit-accepted-saduleto-variation",
    "eco": "D20",
    "eval_cp": 25,
    "roi_u1200": 4.25,
    "roi_2000_plus": 0.95,
    "decay": 3.3
  },
  {
    "name": "Queen's Gambit Declined: Queen's Knight Variation",
    "slug": "queen-s-gambit-declined-queen-s-knight-variation",
    "eco": "D31",
    "eval_cp": 32,
    "roi_u1200": 2.88,
    "roi_2000_plus": -0.32,
    "decay": 3.2
  },
  {
    "name": "Queen's Gambit: e6",
    "slug": "queen-s-gambit-e6",
    "eco": "D06",
    "eval_cp": 34,
    "roi_u1200": 2.86,
    "roi_2000_plus": -0.34,
    "decay": 3.2
  },
  {
    "name": "Queen's Gambit",
    "slug": "queen-s-gambit",
    "eco": "D06",
    "eval_cp": 39,
    "roi_u1200": 3.11,
    "roi_2000_plus": 0.11,
    "decay": 3.0
  },
  {
    "name": "King's Gambit Declined: Queen's Knight Defense",
    "slug": "king-s-gambit-declined-queen-s-knight-defense",
    "eco": "C30",
    "eval_cp": 0,
    "roi_u1200": 1.2,
    "roi_2000_plus": -1.4,
    "decay": 2.6
  },
  {
    "name": "Blackmar-Diemer Gambit: e6",
    "slug": "blackmar-diemer-gambit-e6",
    "eco": "D00",
    "eval_cp": 37,
    "roi_u1200": -0.47,
    "roi_2000_plus": -2.57,
    "decay": 2.1
  }
]