[according to Firebird, black defense, after his mistake at move 17, was, considering the circumstances, accurate, but here he slips again] 31.f4 Ng4 32.h3 Nh6 33.Ne6 [33.Ne7+ Kh7 34.Ne6 wins, Firebird] 33...Re8 34.Ndc7 Rc8 35.Rd1 N6f5 36.Rd7 Rh6 37.Rbd3 Rf6 38.Ng5 Ng6 39.Nce6 Nf8 40.Rd8 Rc1+ 41.Kf2 Rc2+ 42.Ke1 Rxb2 The white forces have been so well managed that Monsieur Schlumberger, who played in the Automaton, considers it is time to prepare for a draw.43.Ra8 Nh4?