Roberto Grau vs. Edgar Colle

3 Responses

1. 
   John Tsamis April 4, 2020 at 04:10

   Extremely beautiful! After 1. Na6+!, White forces the Black King to enter a territory (1…Kxb7 – forced), which is dominated (in squares) by the White Queen and the white light pieces; the Black King cannot escape to the side since the c6 and c7 squares are controlled by the white B and N respectively, while his only “escape square” (a7) is already occupied by the black pawn, hence blocked.
   The discovery check afterward comes naturally: 2. Bd7+!! and the rest is a forced checkmate.
   E. Colle is more known (to me, at least) for his “Colle System”, an impenetrable but stiff and not quite flexible opening “system”. It is regularly combined with (or aiming to) the “Greek Gift sac” (Bxh7+).

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2. 
   Badusha M k July 10, 2020 at 20:35

   Na6+
   Bd7+
   Qb5+#

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3. 
   Jose Cardoso October 3, 2020 at 16:43

   Blacks take the pawn but…1.Na6+ Kxb7 2.Bc4+ Ka8 3.Bd5+ Nc6 4.Bxc6#

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