An important moment. After 49... 50 S£5 (50 flfl Hb8 51 e6 2f8 52 flhl &f6 53 Sh6+ with a draw) 50...<i>g6 51 flfl Black has difficulties in defending himself - the activity of his rook is restricted by his own pawns, and he does not have time to play ...a5-a4, e.g. 51...a4? 52 bxa4 Ha5 53 e6 2xa4 54 e7 b3+ 55 <4>d3 Ha8 56 Bf8. If Black tries a diverting manoeuvre with his g-pawn, the following variation is possible: 51...g4 52 e6 g3 53 e7 Bb8 54 ^e5!, and now 54...g2 does not work - 55 Bgl &f7
56 Sxg2 ^xe7 57 Hg7+ ^f8 58 S a7, and because of the bad position of his king, he loses both pawns. Nevertheless, by playing 51... 3b8 52 e6 3a8 53 <&c5 &g7 and awaiting the right moment for ...a5-a4 or ...g5-g4-g3, Black can save the game. In the end it is probable that Cheron's position (Diagram 7) with a b-pawn will be reached, where Black's king is cut off but he is able to draw.
The continuation chosen by Black in the game is more active.
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