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9/15/2011 - Mate in 9

  • #181
    Bryan681972 wrote:
    MatrimonyVine wrote:

    good but what about 6.Bxc8? threatening 7.Ba6# and 7.Bd7 and 8.Bxc6 checkmate.

    6. Bxc8 allows 6...Rxe8.  Any discovered checks by white allow 7...Rxd8 except for 7. Bb7+.  In that case 7...Kxb7, and black appears to be winning being up a rook for a bishop with no forcing checkmate for white.  If instead of 7. Bb7+ the white rook moves off of the eighth rank then 7...Rxc8 or perhaps 7...Rxe5.  If 7. Rxe8 Rxe8, black's rook forks the white bishops at c8 and e5.  In all of these variations black comes out ahead a rook for a bishop with no forcing checkmate for white.



     6....Rxe8 7.Bd7 Rxd8 8.Bxc6#

  • #182
    MatrimonyVine wrote:
    Bryan681972 wrote:
    MatrimonyVine wrote:

    good but what about 6.Bxc8? threatening 7.Ba6# and 7.Bd7 and 8.Bxc6 checkmate.

    6. Bxc8 allows 6...Rxe8.  Any discovered checks by white allow 7...Rxd8 except for 7. Bb7+.  In that case 7...Kxb7, and black appears to be winning being up a rook for a bishop with no forcing checkmate for white.  If instead of 7. Bb7+ the white rook moves off of the eighth rank then 7...Rxc8 or perhaps 7...Rxe5.  If 7. Rxe8 Rxe8, black's rook forks the white bishops at c8 and e5.  In all of these variations black comes out ahead a rook for a bishop with no forcing checkmate for white.



     6....Rxe8 7.Bd7 Rxd8 8.Bxc6#

    Very nice, a quicker, yet tricky, missed two bishop checkmate for white by me.  Since 6...Re8 could get black checkmated in eight moves then black could try 6...Rf1+ 7. Kb2 Rb1+ 8. Kxb1 Rxe8 9. Bd7+ Rxd8 10. Bxc6# making it longer than the puzzle checkmate in nine.  Also, black can play 9...Kb7 delaying checkmate even longer as well as play 7...Kb7, in your line, delaying checkmate.  Once again though, very nice checkmate!  Thank you again. 


  • #183

    excellentt

  • #184

    Happy with this.  Saw what was needed very quickly (unusually for me) in blocking black's rooks in order to bring white rook up to d8. The best way to do that is with the knight via a discovered check & then drive the king into the corner at a8. Wanted to move 1.Nb5 but couldn't see why black wouldn't take at b5 then saw the two-bishop mate.
      In some of these puzzles the moves seem to suggest themselves & I found it more or less plain-sailing until move 6 then undecided about taking bishop on c8 with rook or bishop ?  But then you see the bishop capture doesn't work (gives black the chance to move the pawn at a7) so the rest of the moves fell into place.
      A good exercise in applied logic & wonderful for the morale   Smile

  • #185

    9

  • #186

    Fun mate indeed!

  • #187

    Wow.

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