Ponderchess / Openings
Play the guided film, or select a scene to pause and study its position.
Opening
The Four Knights Game in 3D
1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6. Both sides bring out their knights before committing other pieces, leading to symmetrical, principled play with a solid reputation.
Rebuild the sequence yourself. The board responds to each move, and hints are available.
Click or drag to move · Arrow keys + Enter to play
Your turn · white to play
Select a piece, then its destination. Switch to 2D for a clear overhead view or rotate the 3D board to explore the position.
Four Knights Game: Spanish Variation, move by move: e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 …
The white pieces
In the Spanish lines, castle, play d3, and use the pin Bg5 or the manoeuvre Ne2-g3 to build pressure on the kingside. Choose 4.d4 if you prefer an open centre.
The black pieces
Answer 4.Bb5 with 4...Nd4 or 4...Bb4, and answer 4.d4 by taking on d4 and pressuring e4. Do not copy White's moves for too long, since in symmetrical positions the side that moves first often strikes first.
Look a little deeper · 01
The Spanish Variation, 4.Bb5, is the main line. Black can mirror it with 4...Bb4 (the Double Spanish), play 4...Bc5, or choose the Rubinstein Variation, 4...Nd4, a pawn offer that is considered one of Black's most reliable answers.
Look a little deeper · 02
The Scotch Variation, 4.d4, opens the centre. After 4...exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5, Black accepts doubled c-pawns in return for active pieces and a central pawn on d5.
Look a little deeper · 03
In the Symmetrical Variation (4.Bb5 Bb4 5.O-O O-O 6.d3 d6), the pin Bg5 and the exchange ...Bxc3, which leaves White with doubled c-pawns, are the key themes. Breaking the symmetry at the right moment decides the game.
Look a little deeper · 04
Quieter tries include 4.g3, the Glek System, and 4.a3, which keeps ...Bb4 out. The Halloween Gambit, 4.Nxe5, gives a knight for a pawn and a big centre, but it is considered unsound.
Four Knights Game: Spanish Variation, move by move: e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 …
Keyboard: Space pauses, the arrow keys step. Gold arrows are White's moves, violet are Black's, red rays are threats, green shows support, blue shows plans.
