← All openingsStartStart the quiz
Pterodactyl Defense
You play Black · 31 variations
Mixed practice
The machine picks a different variation every time.
Take a quiz
10 positions: find the next theory move in each. No take-backs, no hints.
Main variations · 20
- Sicilian, PteranodonB271. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc36 moves
- Sicilian, QuetzalcoatlusB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Be2 d65 moves
- Sicilian, AnhangueraB271. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Be35 moves
- Sicilian, Benoni GambitB271. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. d55 moves
- Sicilian, SiroccopteryxB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc45 moves
- Sicilian, UnpinB271. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 Qa5 5. Bd25 moves
- Central, Benoni Beefeater PterodactylA401. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Bxc3+ 6. bxc3 Qa56 moves
- Central, AnhangueraB061. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. Be3 Qa55 moves
- Central, Benoni QuetzalcoatlusB061. e4 g6 2. d4 Bg7 3. c4 c5 4. d5 d6 5. Nc3 Qa55 moves
- Central, BogoluboviaA421. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 c5 5. Nge2 Qa55 moves
- Central, Quetzalcoatlus GambitB061. e4 g6 2. d4 Bg7 3. c4 c5 4. Nc3 d6 5. dxc5 Qa55 moves
- Central, Benoni PterodactylA401. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 Qa5+4 moves
- Western, SiroccopteryxB061. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+5 moves
- Western, AnhangueraB061. e4 g6 2. d4 Bg7 3. Nf3 c5 4. Be3 Qa5+4 moves
- Western, PterodactylB271. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 Qa54 moves
- Fianchetto, Queen PteranodonA401. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa55 moves
- Fianchetto, King PterodactylB061. e4 g6 2. d4 Bg7 3. g3 c5 4. Nf3 Qa5+4 moves
- Fianchetto, Queen Benoni PterodactylA401. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa54 moves
- Fianchetto, Queen PterodactylA401. d4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Qa5+4 moves
- Fianchetto, RhamphorhynchusB061. e4 g6 2. d4 Bg7 3. g3 c5 4. dxc5 Qa5+4 moves
Other variations · 11
- Eastern, Benoni PteranodonB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa55 moves
- Eastern, PteranodonB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa55 moves
- Eastern, Benoni PterodactylB061. d4 g6 2. Nc3 Bg7 3. e4 c5 4. d5 Qa54 moves
- Eastern, RhamphorhynchusB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Qa54 moves
- Eastern, AnhangueraB061. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be34 moves
- Eastern, BenoniB061. d4 g6 2. e4 Bg7 3. Nc3 c5 4. d54 moves
- Austrian, Austriadactylus WesternB061. e4 g6 2. d4 Bg7 3. f4 c5 4. Nf3 Qa5+4 moves
- Austrian, Grand Prix PterodactylB061. e4 g6 2. Nc3 Bg7 3. f4 c5 4. Nf3 Qa54 moves
- Austrian, PteranodonB061. e4 g6 2. d4 Bg7 3. f4 c5 4. c3 Qa54 moves
- Pterodactyl DefenseA421. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qa5+ 5. Nc3 d65 moves
- Queen Pterodactyl, Quiet LineA401. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e34 moves