MESON Chess Problem Database

Problem Display
PID: 129885 (2N2b2/3p4/1N2P3/4k3/5p2/5P1B/8/K5Q1 w - - 0 1)

Ferber, Eugene

Schweizerische Schachzeitung, 1913

2N2b2/3p4/1N2P3/4k3/5p2/5P1B/8/K5Q1

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sxd7#
    • 1...Ba3
      • 2.Qg7#
    • 1...Bb4
      • 2.Qg7#
    • 1...Bc5
      • 2.Qg7#
    • 1...Bd6
      • 2.Qg7#
    • 1...Bg7
      • 2.Qxg7#
    • 1...d5
      • 2.Sd7#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Sxd7#
      • 1...dxe6
        • 2.Sd7#
      • 1...d5
        • 2.Sd7#
      • 1...d6
        • 2.Sd7#
      • 1...Kf6!
  • Keys
    • 1.Ka2!
      • threat
        • 2.Qa1#
      • 1...Kf6
        • 2.Sxd7#
      • 1...Ba3
        • 2.Qg7#
      • 1...Bb4
        • 2.Qg7#
      • 1...Bc5
        • 2.Qg7#
      • 1...d5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::S(E),XP(c)
    • B(d);N_GUARD::QAB(B)
    • B(d);N_GUARD::QAB(B),XB(d)
    • P(c);SBLOCK::S(E)
  • Tries
    • Try
      • Q(B);
      • Threat
        • S(E),XP(c)
      • Vars
        • P(c);XP(F)::S(E)
        • P(c);::S(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAB(B)
    • Vars
      • K(b);S_FLIGHT::S(E),XP(c)
      • B(d);N_GUARD::QAB(B)
      • P(c);SBLOCK::S(E)
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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).