MESON Chess Problem Database

Problem Display
PID: 282527 (5nN1/3R2K1/2R5/q3k3/6Q1/B1b5/8/1b6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Het Belgisch Schaakbord (L'Echiquier Belge), 1977

5nN1/3R2K1/2R5/q3k3/6Q1/B1b5/8/1b6

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.Rc5#
    • 1...Qa4
      • 2.Rc5#
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qa6
      • 2.Rc5#
    • 1...Se6+
      • 2.Rxe6#
    • 1...Sg6
      • 2.Re6#
    • 1...Sh7
      • 2.Re6#
  • Tries
    • 1.Be7?
      • threat
        • 2.Bf6#
      • 1...Se6+
        • 2.Rxe6#
      • 1...Qd8
        • 2.Rc5#
      • 1...Sh7
        • 2.Re6#
      • 1...Sxd7!
  • Keys
    • 1.Se7!
      • threat
        • 2.Bd6#
      • 1...Se6+
        • 2.Rxe6#
      • 1...Qxa3
        • 2.Rd5#
      • 1...Qb4
        • 2.Rd5#
      • 1...Qc7
        • 2.Rd5#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Be4
        • 2.Qg3#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Bb4
        • 2.Qd4#

This is a version of 22307

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::R(C)
    • Q(c);N_GUARD::R(C),XQ(c)
    • S(e);CHECK,N_GUARD::R1(C),XS(e)
    • S(e);N_GUARD::R1(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • S(e);CHECK,N_GUARD::R1(C),XS(e)
        • Q(c);N_GUARD::R(C)
        • S(e);N_GUARD::R1(C)
      • Refutation
        • S(e);XR(D)
  • Actual
    • S(F);
    • Threat
      • B(A)
    • Vars
      • S(e);CHECK,N_GUARD::R1(C),XS(e)
      • Q(c);N_GUARD,XB(A)::R1(D)
      • Q(c);N_GUARD::R1(D)
      • Q(c);N_GUARD::R(C),XQ(c)
      • Q(c);N_GUARD::R1(D),XQ(c)
      • B(a);SBLOCK::QAB(B)
      • B(a);N_GUARD::QAR1(B),XB(a)
      • B(b);N_GUARD::QAB1(B)
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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).