Does SF include the maximum quiescent depth achieved when displaying the PV to the screen? That might explain the extra depth and low node counts that SF seems to have over other engines. I consider quiescent ply as negative depth, and quiescent moves are never displayed. In the case of BK#2, the SF display is actually showing the results of a two ply search:mjlef wrote:This is just a reminder that "depth" means different things to different programs. You have to compare playing strength in timed games, and Stockfish has proven its strength.
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2 +5.15 321 0:00.00 e5 g6 (exd6 Rxd6)