svoid chessOCR_addBoardLocationsToAGIBlueTrainingImages() {
  new ChessOCR_SquareImagesCollector c;
  c.onBoardFound = voidfunc(S name, Rect r) {
    agiBlue_postInSlice(agiBlue_chessBoardRecognitionTrainingImagesSliceID(),
      name, "Board location", struct(r));
  };
  c.loadImagesFromAGIBlue();
}