MESON Chess Problem Database

Problem Display
PID: 16330 (6Q1/p1KN4/2pPN3/r2k1r2/5p2/1P1p3B/3P3b/8 w - - 0 1)

Fenner, A Jack

Chess, 1940

6Q1/p1KN4/2pPN3/r2k1r2/5p2/1P1p3B/3P3b/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sf6#
  • Tries
    • 1.Sxf4+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4!
    • 1.Sec5+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Rf7!
    • 1.Sg5+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Rf7!
    • 1.Qg2+?
      • 1...Kxe6
        • 2.Qg8#
      • 1...f3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxf5#
      • 1...Ke4
        • 2.Bg2#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Rf7
        • 2.Qf3#
      • 1...Re5
        • 2.Sf6#
      • 1...Rg5
        • 2.Qf3#
      • 1...Rh5
        • 2.Qf3#
      • 1...Rf6
        • 2.Qf3#
      • 1...Rf8
        • 2.Qf3#
      • 1...f3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,SBLOCK::S(G)
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(H)
      • Refutation
        • R(f);P_PINS(G),P_SPINR(f)
    • Try
      • S(E);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(H)
      • Refutation
        • R(f);P_PINS(G),P_SPINR(f)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);OGATEB,P_SPINR(f),S_FLIGHT,XS(E)::QAB(H)
      • Refutation
        • P(c);P_PINP(D),P_SPINP(c)
  • Actual
    • Q(H);
    • Threat
      • QAR2(H),XR(f)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::B(C)
      • K(e);OGATEB,P_SPINR(f),S_FLIGHT,XS(E)::QAB(H)
      • R(f);P_PINS(G)::QAB(H)
      • R(f);N_GUARD,SBLOCK::S(G)
      • R(f);::QAB(H)
      • P(c);OGATE,P_PINP(D)::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).