The Rat Defense in 3D · Ponderchess

01

Watch the idea unfold.

Play the guided film, or select a scene to pause and study its position.

Setting up the board…

Opening

The Rat Defense in 3D

The Rat Defense, following the Rat Defense: Fuller Gambit. Watch how each move fights for the centre and develops the pieces.

White moveBlack moveThreatSupport / safe squarePlan

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02

Put the idea on the board.

Rebuild the sequence yourself. The board responds to each move, and hints are available.

Preparing your chess set…

Click or drag to move · Arrow keys + Enter to play

Your turn · white to play

Play the opening sequence

Play White's moves from the demonstration. Black replies automatically. Use a hint when you need a reminder.

0 of 3 moves practisedYour move

Select a piece, then its destination. Switch to 2D for a clear overhead view or rotate the 3D board to explore the position.

Position 1 of 1Understand why →

03

What to carry into your next game.

Rat Defense: Fuller Gambit, move by move: e4 d6 f4 d5 exd5 Nf6

Explore the opening Next: The Italian Game

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.