MESON Chess Problem Database

Problem Display
PID: 62895 (1B2Q3/6p1/3pn1P1/1RpkN3/2Rn1PK1/3p4/3P4/8 w - - 0 1)

Gunn, Robert Ivan

Chess, 1944

1B2Q3/6p1/3pn1P1/1RpkN3/2Rn1PK1/3p4/3P4/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qc6#
    • 1...Se2
      • 2.Qc6#
    • 1...Sb3
      • 2.Qc6#
    • 1...Sf3
      • 2.Qc6#
    • 1...Sxb5
      • 2.Qc6#
    • 1...Sf5
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
  • Keys
    • 1.Sd7!
      • 1...Kxc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kc6
        • 2.Sf6#
      • 1...Sxb5
        • 2.Sb6#
      • 1...Sxf4
        • 2.Sb6#
      • 1...Sc2
        • 2.Sb6#
      • 1...Se2
        • 2.Sb6#
      • 1...Sb3
        • 2.Sb6#
      • 1...Sf3
        • 2.Sb6#
      • 1...Sf5
        • 2.Sb6#
      • 1...Sc6
        • 2.Sb6#
      • 1...Sg5
        • 2.Sb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...Sd8
        • 2.Sb6#
      • 1...Sf8
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(I)
    • S(b);N_GUARD,N_SPINP(c),XR(E)::QAB1(I)
    • S(b);N_GUARD::QAB1(I),XS(b)
  • Actual
    • S(F);
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT,XR(B)::S(F)
      • K(d);N_SPINP(c),P_SPINS(b),S_FLIGHT::QAR2(I),XS(f)
      • K(d);S_FLIGHT::QAB(I)+S(F)
      • S(b);N_SPINP(c),XR(E)::S(F)
      • S(f);XP(C)::S(F)
      • S(b);::S(F)
      • S(f);::S(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).