MESON Chess Problem Database

Problem Display
PID: 224256 (1Q6/3p4/5K2/2k5/2p2N2/P7/2N5/8 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Deutsche Schachzeitung, 1888

1Q6/3p4/5K2/2k5/2p2N2/P7/2N5/8

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • 1...Kd4
        • 2.Qe5#
      • 1...d5
        • 2.Se6#
      • 1...d6
        • 2.Se6#
      • 1...c3!
    • 1.Qa7+?
      • 1...Kb5
        • 2.Sd4#
      • 1...Kd6
        • 2.Qb6#
      • 1...Kc6!
    • 1.Qb5+?
      • 1...Kd6
        • 2.Qb6#
      • 1...Kxb5!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Qe5#
      • 1...c3
        • 2.Qb4#
      • 1...d5
        • 2.Sfe6#
      • 1...d6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(c);N_GUARD::S(C)
      • Refutation
        • P(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
  • Actual
    • S(A);
    • Vars
      • K(b);S_FLIGHT,XS(A)::QAB1(E)
      • P(a);::QAB1(E)
      • P(c);N_GUARD,SBLOCK::S(C)
      • P(c);SBLOCK::QAB(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).