MESON Chess Problem Database

Problem Display
PID: 120027 (3nK1Q1/8/2p5/1pN1P2R/3k4/P3p3/B3pN2/2n1B3 w - - 0 1)

Ferber, Eugene

Deutsche Schachzeitung, 1901

3nK1Q1/8/2p5/1pN1P2R/3k4/P3p3/B3pN2/2n1B3

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa2
      • 2.Sb3#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sd3
      • 2.Sb3#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sb7
      • 2.Se6#
    • 1...Sf7
      • 2.Se6#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Sfe4?
      • threat
        • 2.Bc3#
      • 1...b4
        • 2.Qc4#
      • 1...Sxa2!
    • 1.Bb4?
      • threat
        • 2.Qg4#
      • 1...Sxa2
        • 2.Sb3#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...Se6
        • 2.Sxe6#
      • 1...exf2!
  • Keys
    • 1.Qf7!
      • 1...Kxc5
        • 2.Qa7#
      • 1...Sxa2
        • 2.Sb3#
      • 1...Sxf7
        • 2.Se6#
      • 1...exf2
        • 2.Qxf2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sb7
        • 2.Se6#
      • 1...b4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,XB(B)::S(E)
    • S(a);N_GUARD::S(E),XS(a)
    • S(a);N_GUARD::S(E)
    • S(g);N_GUARD::S(E),XS(g)
    • S(g);N_GUARD::S(E)
    • P(e);N_GUARD::QAR1(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(A)
      • Vars
        • P(e);N_GUARD::QAR1(I)
      • Refutation
        • S(a);XB(B)
    • Try
      • B(A);
      • Threat
        • QAR(I)
      • Vars
        • S(a);N_GUARD,XB(B)::S(E)
        • S(a);N_GUARD::S(E),XS(a)
        • S(a);N_GUARD::S(E)
        • S(g);N_GUARD::S(E),XS(g)
      • Refutation
        • P(c);XS(C)
  • Actual
    • Q(I);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(E)::QAB(I)
      • S(a);N_GUARD,XB(B)::S(E)
      • S(g);N_GUARD,XQ(I)::S(E)
      • P(c);OGATE,XS(C)::QAB(I),XP(c)
      • S(a);N_GUARD::S(E),XS(a)
      • S(a);N_GUARD::S(E)
      • S(g);N_GUARD::S(E),XS(g)
      • S(g);N_GUARD::S(E)
      • P(e);N_GUARD::QAR1(I)
HTML5 logo

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).