A further radical variation is that a captured piece or pawn is not removed from the board.

It becomes the property of the captor and is thereafter played by him.
Well, I taught Oppenheimer this game--a far more difficult achievement than our own game, as will be admitted, when the capturing and recapturing and continued playing of pawns and pieces is considered.
Solitary is not heated.

It would be a wickedness to ease a convict from any spite of the elements.

And many a dreary day of biting cold did Oppenheimer and I forget that and the following winter in the absorption of Cho-Sen chess.
But there was no convincing him that I had in truth brought this game back to San Quentin across the centuries.

He insisted that I had read about it somewhere, and, though I had forgotten the reading, the stuff of the reading was nevertheless in the content of my mind, ripe to be brought out in any pipe-dream.