MESON Chess Problem Database

Problem Display
PID: 198876 (8/K5pB/6nq/5n2/R2Pk3/1Q1R2B1/4N1P1/8 w - - 0 1)

Bonner Feast, Frederick

Brisbane Courier, 1921

8/K5pB/6nq/5n2/R2Pk3/1Q1R2B1/4N1P1/8

#2

9 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Re3#
    • 1...Sh4
      • 2.d5#
    • 1...Se5
      • 2.dxe5#
    • 1...Se7
      • 2.d5#
    • 1...Sf8
      • 2.d5#
    • 1...Sh8
      • 2.d5#
  • Tries
    • 1.Qe6+?
      • 1...Se5
        • 2.Bxf5#
      • 1...Kxd3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qb7#
      • 1...Sxg3
        • 2.Qe6#
      • 1...Sxd4
        • 2.Qe6#
      • 1...Se3
        • 2.Qe6#
      • 1...Sfh4
        • 2.Qe6#
      • 1...Sd6
        • 2.Qe6#
      • 1...Sfe7
        • 2.Qe6#
      • 1...Sf4
        • 2.Re3#
      • 1...Sgh4
        • 2.d5#
      • 1...Se5
        • 2.dxe5#
      • 1...Sge7
        • 2.d5#
      • 1...Sf8
        • 2.d5#
      • 1...Sh8
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);P_SPINS(b),S_CUTQ(d)::R1(D)
    • S(c);P_SPINS(b)::R(F)+P(G)
    • S(c);OGATE,P_SPINS(b)::R(F)+P(G),XS(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(c);OGATE,P_SPINS(c)::B(I),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • R(D);
    • Threat
      • QAB(C)
    • Vars
      • S(b);P_SPINS(c),XB(E)::QAR2(C)
      • S(b);P_SPINS(b),S_CUTS(c),XP(G)::QAR2(C)
      • S(b);P_SPINS(c)::QAR2(C)
      • S(c);P_SPINS(b),S_CUTQ(d)::R1(D)
      • S(c);P_SPINS(b)::R(F)+P(G)
      • S(c);OGATE,P_SPINS(b)::R(F)+P(G),XS(c)
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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).