MESON Chess Problem Database

Problem Display
PID: 187822 (3NNn1K/8/2p3pp/4k3/4B1R1/4Q3/b7/b7 w - - 0 1)

Gold, Samuel

Pesti Naplo, 1909

3NNn1K/8/2p3pp/4k3/4B1R1/4Q3/b7/b7

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qf4#
      • 2.Qg3#
    • 1...Bb1
      • 2.Qc5#
    • 1...Be6
      • 2.Sxc6#
    • 1...Se6
      • 2.Sxc6#
      • 2.Sf7#
    • 1...h5
      • 2.Rg5#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qd6#
      • 1...Bd4
        • 2.Qf4#
        • 2.Qh2#
      • 1...Bd5!
    • 1.Qd3?
      • threat
        • 2.Qd6#
      • 1...Bd4
        • 2.Qg3#
      • 1...Bd5!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qxa1#
      • 1...Kd4
        • 2.Sxc6#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bd4
        • 2.Qf4#
      • 1...Bb1
        • 2.Qc5#
      • 1...Se6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(b);N_GUARD::QAR2(A)
    • B(b);SBLOCK::S(D),XP(d)
    • P(f);N_GUARD::R(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(a);SBLOCK::QAB(A)
      • Refutation
        • B(b);
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XB(a)
    • Vars
      • K(c);S_FLIGHT::S(D),XP(d)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);SBLOCK::QAB1(A)
      • B(b);N_GUARD::QAR2(A)
      • S(g);SBLOCK::S(D),XP(d)
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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).