MESON Chess Problem Database

Problem Display
PID: 9696 (K7/R7/1pN2p2/1N6/bpk1B3/2p5/1bn5/r5B1 w - - 0 1)

Blake, Percy Francis

Hampstead and Highgate Express, 1908

K7/R7/1pN2p2/1N6/bpk1B3/2p5/1bn5/r5B1

#2

6 + 9

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Bd5#
    • 1...Bb3
      • 2.Sd6#
    • 1...b3
      • 2.Sd6#
  • Tries
    • 1.Sa5+?
      • 1...Kxb5
        • 2.Bd3#
        • 2.Bc6#
      • 1...bxa5!
    • 1.Se5+?
      • 1...Kb3
        • 2.Bd5#
      • 1...Kxb5
        • 2.Bd3#
        • 2.Bc6#
      • 1...fxe5!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Scd4#
      • 1...Bb3+
        • 2.Sca7#
      • 1...Bxb5+
        • 2.Sa5#
      • 1...Kb3
        • 2.Bd5#
      • 1...Kxb5
        • 2.Bd3#
      • 1...Sd4
        • 2.Scxd4#
      • 1...b3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);S_FLIGHT::B(B)
    • B(e);P_PINR(E),SBLOCK::S(C)
    • P(f);SBLOCK::S(C)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(h);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(g);S_FLIGHT::B(B)
      • Refutation
        • P(i);XS(D)
  • Actual
    • R(E);
    • Threat
      • R(E)+S(D)
    • Vars
      • B(e);CHECK,SBLOCK::R(E)+S(D)
      • B(e);CHECK,SBLOCK,XS(C)::R(E)+S(D),DCHECK
      • K(g);S_FLIGHT::B(B)
      • K(g);S_FLIGHT,XS(C)::B(B)
      • S(c);::R(E)+S(D),XS(c)
      • P(f);SBLOCK::S(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).