MESON Chess Problem Database

Problem Display
PID: 175256 (8/1QP5/r2n4/k2P4/rNBB4/p7/n7/K7 w - - 0 1)

White, Alain Campbell

Wiener Hausfrauen-Zeitung, 1902

8/1QP5/r2n4/k2P4/rNBB4/p7/n7/K7

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Qxa6#
    • 1...Rb6
      • 2.Qxb6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Ra7
      • 2.Sc6#
      • 2.Qb6#
    • 1...Ra8
      • 2.Sc6#
      • 2.Qb6#
    • 1...Se4
      • 2.Qb5#
    • 1...Sb5
      • 2.Qxb5#
    • 1...Sf5
      • 2.Qb5#
    • 1...Sf7
      • 2.Qb5#
    • 1...Sc8
      • 2.Qb5#
    • 1...Se8
      • 2.Qb5#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Sc6#
      • 1...Kxb4
        • 2.Qc5#
      • 1...Rxb4
        • 2.Qxa6#
      • 1...Sxb4
        • 2.Bb6#
      • 1...Sxc4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(c);SBLOCK,XS(B)::QAR1(F),XR(e)
    • R(e);N_GUARD::QAB1(F),XR(e)
    • R(e);N_GUARD::S(B),XR(e)
    • S(f);N_GUARD::QAR1(F)
    • S(f);N_GUARD::QAR1(F),XS(f)
  • Actual
    • Q(F);P_PINR(e)
    • Threat
      • S(B)
    • Vars
      • K(d);N_SPINR(e),S_FLIGHT,XS(B)::QAB1(F)
      • R(c);SBLOCK,XS(B)::QAR1(F),XR(e)
      • S(a);SBLOCK,XS(B)::B(D)
      • S(f);N_GUARD,XB(C)::QAR2(F)
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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).