draughts_parsing

Matcher positionMatcher = DraughtsPatterns.draughtPosition.matcher(line);
if (line.contains("-")) {
    String from = null, to = null;
    if (positionMatcher.find())
        from = positionMatcher.group(0);
    if (positionMatcher.find())
        to = positionMatcher.group();
    makeMove(from, to);
} else {
    if (positionMatcher.find()) {
        String from = positionMatcher.group();
        while (positionMatcher.find()) {
            String to = positionMatcher.group();
            makeCapture(from, to);
            from = to;
        }
    }
}