Not entirely sure about caps at the amateur level. At least go servers don't have such cap, and there's certain mapping between KGS ranks to offline amateur ran

Not entirely sure about caps at the amateur level. At least go servers don't have such cap, and there's certain mapping between KGS ranks to offline amateur ranks. The highest attainable rank at Go servers is 9d, aguilar is 6d there. https://www.gokgs.com/graphPage.jsp?user=aguilar1 https://www.gokgs.com/graphPage.jsp?user=aguilar1 An informal mapping among ranking systems can be seen here: http://senseis.xmp.net/?RankWorldwideComparison http://senseis.xmp.net/?RankWorldwideComparison Servers usually manually override ranks for professional players... But going back to my point, a 9p should be consistently stronger than a 6 dan amateur, but these counterexamples challenge that.