MESON Chess Problem Database

Problem Display
PID: 11054 (4B2K/6Q1/8/p4N2/Nkn1n1R1/p2b4/Pqp4b/1R1r4 w - - 0 1)

Kish, Alexander

Chess, 1936

4B2K/6Q1/8/p4N2/Nkn1n1R1/p2b4/Pqp4b/1R1r4

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Rxb3#
    • 1...Scd2
      • 2.Qc3#
    • 1...Se3
      • 2.Qc3#
    • 1...Sb6
      • 2.Qc3#
    • 1...Scd6
      • 2.Qc3#
    • 1...Sed2
      • 2.Qc3#
    • 1...Sf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sg3
      • 2.Qc3#
    • 1...Sc5
      • 2.Qc3#
    • 1...Sg5
      • 2.Qc3#
    • 1...Sed6
      • 2.Qc3#
    • 1...Sf6
      • 2.Qb7#
  • Tries
    • 1.Rxb2+?
      • 1...Sxb2
        • 2.Qc3#
      • 1...axb2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd5#
      • 1...Sxe3
        • 2.Qc3#
      • 1...Bf1
        • 2.Sxc2#
      • 1...Be2
        • 2.Sxc2#
      • 1...Scd2
        • 2.Qc3#
      • 1...Se5
        • 2.Qf8#
        • 2.Qe7#
      • 1...Sb6
        • 2.Qc3#
      • 1...Scd6
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sf6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_PINQ(F),OGATE::R1(A),XQ(b)
    • S(h);P_SPINS(i)::QAB1(F)
    • S(i);N_GUARD,P_SPINS(h)::QAB1(F)
    • S(i);N_GUARD,N_PINQ(F),P_SPINS(h)::QAB1(F),XS(i)
    • S(i);N_PINQ(F),P_SPINS(h)::QAR(F)
  • Tries
    • Try
      • R(A);CHECK,N_SPINQ(F),XQ(b)
      • Vars
        • S(h);P_SPINS(i),XR(A)::QAB1(F)
      • Refutation
        • P(e);XR(A)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • S(h);P_SPINS(i),XS(E)::QAB1(F)
      • B(f);N_GUARD::S(E),XP(c)
      • S(h);P_SPINS(i)::QAB1(F)
      • S(i);N_GUARD,N_PINQ(F),P_SPINS(h)::QAB1(F),XS(i)
      • S(i);N_PINQ(F),P_SPINS(h)::QAR(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).