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  1. Standard member Dragon Fire
    Lord of all beasts
    07 Dec '06 20:23
    This begins to get more difficult now but 2Bs can bring direct pressure to bear and must force the King into a corner to mate.

    From the following position with black to move



    1. ... Ke7
    Once again the king wants to get in the centre where it cannot be mated
    2. Bf4 .. Ke6;
    3. Bd3 .. Kf6;
    4. Be4
    With this move the King cannot approach the B pair and is already restricted to only 19 squares
    4. ... Ke6;
    5. Kd2
    This King must now come up in support
    5. ... Kd7;
    6. Kd3 .. Ke6;
    7. Kd4 .. Kf6;
    8. Kd5 .. Ke7;
    9. Be5 .. Kd7;
    10. Bf5+ .. Ke7;
    11. Bb2 .. Ke8;
    12. Ke6 .. Kd8;
    13. Kd6 .. Ke8;
    14. Bg6+ .. Kd8;
    15. Be5 .. Kc8;
    16. Kc6 .. Kd8;
    17. Bf6+ .. Kc8;
    Now we are driving the king towards the corner where it must be for mate to be delivered
    18. Bf5+ .. Kb8;
    19. Kb6 .. Ka8;
    20. Bc3 .. Kb8;
    21. Be5+ .. Ka8;
    22. Be4++

    This may not be the quickest way but it shows the principles of how it is done. Mate can be delivered in either corner.
  2. Standard member Dragon Fire
    Lord of all beasts
    25 Aug '07 16:48
    bump