MESON Chess Problem Database

Problem Display
PID: 54097 (Q7/8/8/6p1/3Pn1P1/1Np5/2bpkPK1/R4R2 w - - 0 1)

Gunn, Robert Ivan

Chess, 1943

Q7/8/8/6p1/3Pn1P1/1Np5/2bpkPK1/R4R2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qa6#
    • 1...Bd1
      • 2.Qxe4#
      • 2.Qa6#
    • 1...Bxb3
      • 2.Qxe4#
    • 1...Sxf2
      • 2.Qf3#
    • 1...Sg3
      • 2.Qf3#
    • 1...Sc5
      • 2.Qf3#
    • 1...Sd6
      • 2.Qf3#
    • 1...Sf6
      • 2.Qf3#
  • Keys
    • 1.Ra2!
      • 1...Kd3
        • 2.Qa6#
      • 1...Bxb3
        • 2.Qxe4#
      • 1...Sxf2
        • 2.Qf3#
      • 1...d1Q
        • 2.Qxe4#
      • 1...d1S
        • 2.Qa6#
      • 1...d1B
        • 2.Qxe4#
        • 2.Qa6#
      • 1...d1R
        • 2.Qxe4#
      • 1...Bb1
        • 2.Sc1#
      • 1...Bd1
        • 2.Sc1#
        • 2.Qxe4#
        • 2.Qa6#
      • 1...Bd3
        • 2.Sc1#
      • 1...Sg3
        • 2.Qf3#
      • 1...Sc5
        • 2.Qf3#
      • 1...Sd6
        • 2.Qf3#
      • 1...Sf6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(H)
    • B(a);N_GUARD,XS(E)::QAR2(H),XS(e)
    • S(e);OGATE,XP(C)::QAB1(H)
    • S(e);OGATE::QAB1(H)
  • Actual
    • R(A);
    • Vars
      • K(c);S_FLIGHT::QAB(H)
      • B(a);N_GUARD,P_SPINP(b),XS(E)::QAR2(H),XS(e)
      • S(e);OGATE,XP(C)::QAB1(H)
      • P(b);P_SPINB(a)::QAR2(H),XS(e)
      • P(b);P_SPINB(a)::QAB(H)
      • B(a);P_SPINP(b)::S(E)
      • S(e);OGATE::QAB1(H)
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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).