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C20

Bongcloud Attack

The ultimate psychological weapon — walk your king on move two and dare your opponent to do something about it.

TLDR

  • • An infamous 'meme' chess opening where White voluntarily forfeits castling and exposes their king by playing 2. Ke2.
  • • Widely used online for psychological warfare, streamer content, or as a massive handicap challenge against lower-rated opponents.
  • • Historically entered elite over-the-board/online play when Hikaru Nakamura defeated Jeffery Xiong (2020) and drew Magnus Carlsen (2021) in the 'Double Bongcloud'.
  • • Objectively terrible from a theoretical standpoint, but practically rich in chaotic and psychological complexity.

Opening

Bongcloud Attack

The ultimate psychological weapon — walk your king on move two and dare your opponent to do something about it.

Starting position

Starting Position

Every game of chess begins here. White has 20 possible first moves, but the most popular and ambitious is 1. e4.

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Move sequences and interactive tour paths for Bongcloud Attack

The Bongcloud Attack Tour

  • Starting Position - Every game of chess begins here. White has 20 possible first moves, but the most popular and ambitious is 1. e4.
  • 1. e4: King's Pawn Game - White stakes a claim in the center, opens lines for the queen and light-squared bishop, and prepares to control the d5 square.
  • 1... e5: Symmetrical Response - Black fights back immediately, mirroring White's move to contest the central squares and establish their own foothold.
  • 2. Ke2: The Bongcloud Attack - The infamous Bongcloud! White wanders the king to e2 on move two, blocking their own queen and bishop, forfeiting castling rights, and exposing the king to the open. This is widely considered the ultimate psychological weapon or a self-imposed handicap.
  • 2... Nf6: Developing with Tempo - Black develops their king's knight naturally, targeting White's undefended e4-pawn. Since White's king is on e2, White cannot easily castle to safety.
  • 3. d3: Defending the e4 Pawn - White plays a modest pawn move to protect the e4-pawn and open a diagonal for the dark-squared bishop, though it blocks the light-squared bishop.
  • 3... d5: Striking the Center - Black strikes at the center immediately, taking advantage of White's slow play and exposed king. The threat of opening the d-file makes White's king very uncomfortable.
  • 4. Nd2: Supporting the Center - White develops the queen's knight to d2, defending the e4 pawn. Because the king is on e2, Nc3 was not preferred as it blocks the c-pawn, and Nd2 supports the center while keeping the c-pawn free.
  • 4... Nc6: Developing the Queen's Knight - Black develops their other knight to c6, eyeing key central squares like d4 and e5, and preparing for rapid queenside castling or kingside pressure.
  • 5. Ngf3: Developing the King's Knight - White finally develops the king's knight, contesting the central dark squares and preparing to shield the king.
  • 5... Bc5: Targeting the f2 Weakness - Black places their bishop on the active c5-square, aiming directly at White's vulnerable f2 pawn. With White's king on e2, any tactics on the f2-square are highly dangerous.
  • 6. h3: Preventing Knight Jumps - White plays a precautionary pawn move to prevent Black from jumping their knight or bishop to g4, and to create a potential hiding square for the king on h2 or g1 later.
  • 6... O-O: Castling to Safety - Black castles kingside, completing their development and placing their king in complete safety. In contrast, White's king remains stranded on e2, giving Black a clear developmental and positional advantage.
  • 2... Ke7: The Double Bongcloud - The ultimate show of respect and humor! Black mirrors White's move, walking their own king forward to e7. This occurred in the famous online encounter between Magnus Carlsen and Hikaru Nakamura in 2021.
  • 3. Ke1: King Retreats - White retreats the king to its original square, e1, admitting that the joke has run its course.
  • 3... Ke8: Black King Retreats - Black also retreats the king, returning to the symmetrical starting position.
  • 4. Ke2: Repeating the Cycle - White steps forward again, initiating a repetition of the position.
  • 4... Ke7: Threefold Repetition Draw - Black mirrors once again. The players agreed to a draw by threefold repetition, marking one of the most famous and lighthearted moments in online chess history.
  • 2... d5: Immediate Central Strike - Black refuses to play along with the meme and immediately strikes at the center, punishing White's premature king move.
  • 3. exd5: Capturing the Pawn - White has to capture on d5, opening up lines in the center which will inevitably expose White's misplaced king even further.
  • 3... Qxd5: Recapturing with the Queen - Black recaptures with the queen, centralizing it. Normally, bringing the queen out early is risky, but here White's king placement makes it difficult to exploit.
  • 4. Nc3: Challenging the Queen - White develops the knight to c3, attacking the centralized Black queen and gaining a tempo.
  • 4... Qa5: Queen Retreats - Black's queen retreats to a5, transitioning to a highly favorable version of the Scandinavian Defense where White's king is awkwardly placed on e2.

Want to put it into practice?

Test your tactics on today's Control The Center puzzle.

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The Idea

The Bongcloud Attack (1. e4 e5 2. Ke2) is the ultimate troll opening in modern chess history. While standard openings emphasize center control, fast development, and early king safety, the Bongcloud aggressively mocks these tenets. By moving the King on move two, White blocks their own queen and light-squared bishop, gives up castling rights, and walks the king into the open center.

Objectively, the opening is completely dubious. Yet, in the modern era of online blitz and streaming, it has achieved legendary status. Promoted by figures like Hikaru Nakamura, the opening is used as a psychological weapon to disorient opponents, mock their preparations, or demonstrate a significant handicap advantage.

Why Play It?

  1. Psychological Warfare: It immediately puts the opponent on tilt. They know they are playing a theoretically winning position, which adds intense pressure to win, often leading to overthinking and blunders.
  2. Avoiding Preparation: It bypasses all opening theory. Both players are immediately thrown into a unique middle-game struggle on move two.
  3. Meme Culture: It is a lighthearted nod to chess streaming culture, bringing fun and spectacle back to the 64 squares.

Famous Games

Magnus Carlsen vs Hikaru Nakamura

Magnus Carlsen Invitational, 2021

In a hilarious moment of modern chess culture, Carlsen and Nakamura play the Double Bongcloud to secure a quick draw, drawing laughter from commentators and fans worldwide.

PGN Game Record for Magnus Carlsen vs Hikaru Nakamura
[Event "Magnus Carlsen Invitational"]
[Site "chess24.com INT"]
[Date "2021.03.15"]
[Round "4"]
[White "Carlsen, Magnus"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "C20"]
[WhiteElo "2847"]
[BlackElo "2829"]
[Opening "Bongcloud Attack"]

1. e4 e5 2. Ke2 Ke7 3. Ke1 Ke8 4. Ke2 Ke7 5. Ke1 Ke8 6. Ke2 Ke7 1/2-1/2

Hikaru Nakamura vs Jeffery Xiong

Saint Louis Rapid and Blitz, 2020

Nakamura shocks the chess world by playing the Bongcloud in a professional online tournament against Jeffery Xiong, successfully fighting through the self-imposed disadvantage to win the game.

PGN Game Record for Hikaru Nakamura vs Jeffery Xiong
[Event "Saint Louis Rapid and Blitz"]
[Site "Lichess.org"]
[Date "2020.09.19"]
[Round "27"]
[White "Nakamura, Hikaru"]
[Black "Xiong, Jeffery"]
[Result "1-0"]
[Opening "King's Pawn Game: Bongcloud Attack (C20)"]

1. e4 e5 2. Ke2 Nf6 3. d3 d5 4. Nd2 Nc6 5. c3 b6 6. Qc2 Bb7 7. Ngf3 Qd7 8. b4 O-O-O 9. a3 Kb8 10. Bb2 g6 11. Ke1 Bh6 12. Rd1 Rhe8 13. Be2 Nh5 14. b5 Na5 15. c4 Nf4 16. Bf1 dxc4 17. dxc4 f5 18. c5 fxe4 19. c6 Nxc6 20. bxc6 Bxc6 21. Nxe5 Nd3+ 22. Bxd3 exd3 23. Qc4 Bxg2 24. Rg1 Bb7 25. Qh4 Qf5 26. Qxh6 Rxe5+ 27. Bxe5 Qxe5+ 28. Qe3 Qxh2 29. Kf1 Qh5 30. f3 Bc6 31. Qg5 Qh3+ 32. Kf2 Qh2+ 33. Rg2 Qd6 34. Re1 Rf8 35. Kg1 Rf5 36. Qe7 Qf4 37. Qd8+ Kb7 38. Qxd3 Rd5 39. Qe3 Qh4 40. Qf2 Qa4 41. Re3 Qd1+ 42. Qe1 Qa4 43. Rc3 Rh5 44. Rg4 Qa5 45. Qc1 Qe5 46. Nf1 Qe6 47. Rgc4 Bb5 48. Rxc7+ Ka6 49. a4 Be2 50. Re3 Rg5+ 51. Kf2 Qh3 52. Kxe2 1-0