MESON Chess Problem Database

Problem Display
PID: 68012 (1BB5/4Qpb1/4nn2/RN6/1P2kPp1/8/3K2P1/8 w - - 0 1)

Barron, Philip

Chess, 1949

1BB5/4Qpb1/4nn2/RN6/1P2kPp1/8/3K2P1/8

#2

9 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • threat
        • 2.Sc3#
        • 2.Qe5#
      • 1...Sc7
        • 2.Qd4#
        • 2.Qc4#
        • 2.Qe5#
        • 2.Qf5#
      • 1...Sd5
        • 2.Qc2#
      • 1...Sh5
        • 2.Bb7#
      • 1...Sd7
        • 2.Bb7#
      • 1...Sh7
        • 2.Bb7#
      • 1...Se8
        • 2.Bb7#
      • 1...Sg8
        • 2.Bb7#
      • 1...Sxc5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxe6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...Kf5
        • 2.Sc3#
      • 1...Sxf4
        • 2.Qc4#
      • 1...Sd5
        • 2.Qg6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sc5
        • 2.Qc4#
      • 1...Sg5
        • 2.Qc4#
      • 1...Sc7
        • 2.Qc4#
      • 1...Sd8
        • 2.Qc4#
      • 1...Sf8
        • 2.Qc4#
      • 1...Sh5
        • 2.Bb7#
      • 1...Sd7
        • 2.Bb7#
      • 1...Sh7
        • 2.Bb7#
      • 1...Se8
        • 2.Bb7#
      • 1...Sg8
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);SBLOCK::QAB(G)
        • S(d);N_GUARD::B(I)
      • Refutation
        • S(c);XQ(G)
  • Actual
    • Q(G);N_PINS(c),XP(e)
    • Threat
      • QAR2(G),XS(c)
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT::QAB1(G),XS(c)
      • K(a);P_SPINS(c),S_FLIGHT::R(E)+S(F)
      • S(c);OGATE,XP(D)::QAR2(G)
      • S(d);SBLOCK::QAB(G)
      • S(c);SBLOCK::S(F)
      • S(c);OGATE::QAR2(G)
      • S(d);N_GUARD::B(I)
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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).