MESON Chess Problem Database

Problem Display
PID: 16048 (8/1b1R1nN1/3r2B1/2rp2R1/N1Pkq1pK/1P2p1Q1/4P2B/8 w - - 0 1)

Joseph, Fernand

Probleemblad, 2000

8/1b1R1nN1/3r2B1/2rp2R1/N1Pkq1pK/1P2p1Q1/4P2B/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qxf4#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Sf5#
      • 1...Qxg4+
        • 2.Qxg4#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Rf6
        • 2.Rxe4#
      • 1...Sh6
        • 2.Qe5#
      • 1...dxc4!
  • Keys
    • 1.Qxg4!
      • threat
        • 2.Sf5#
      • 1...Qxg4+
        • 2.Rxg4#
      • 1...dxc4
        • 2.Se6#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Rf6
        • 2.Qxe4#
      • 1...Sh6
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(c);OGATEB::QAR2(D),XQ(c)
  • Tries
    • Try
      • R(H);P_PINQ(c),P_SPINR(H),XP(d)
      • Threat
        • S(K)
      • Vars
        • Q(c);CHECK,N_SPINQ(c),OGATE,XR(H)::QAR(D),XQ(c)
        • Q(c);OGATEB::QAR2(D),XQ(c)
        • R(g);P_SPINP(f)::R1(H),XQ(c)
        • S(i);N_GUARD::QAB1(D)
      • Refutation
        • P(f);P_SPINR(g),XP(F)
  • Actual
    • Q(D);P_PINQ(c),P_SPINQ(D),XP(d)
    • Threat
      • S(K)
    • Vars
      • Q(c);CHECK,N_SPINQ(c),OGATE,XQ(D)::R(H),XQ(c)
      • P(f);P_SPINR(g),XP(F)::S(K)
      • Q(c);::QAR2(D),XQ(c)
      • R(g);P_SPINP(f)::QAR1(D),XQ(c)
      • S(i);N_GUARD::B(B)
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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).