Ponderchess / Special moves
Understand the quiet-move counter and what resets it.
Count fifty moves by each player.
A pawn move or any capture resets the count.
At the threshold a player can claim a draw.
Play the guided film, or select a scene to pause and study its position.
Rule
The fifty-move rule in 3D
Rook against bishop: White keeps trying, but there has been no capture and no pawn move for ninety-nine half-moves.
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.
Ninety-nine quiet half-moves, then one more.
Idea 01
Idea 02
Idea 03
Ninety-nine quiet half-moves, then one more.
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.
Make the idea yours
No timer. No score. Just a moment to check your understanding.
