MESON Chess Problem Database

Problem Display
PID: 227926 (7Q/4p3/3p4/4Np2/Pp1k1N2/1p3K2/1P6/8 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Deutsche Schachzeitung, 1894

7Q/4p3/3p4/4Np2/Pp1k1N2/1p3K2/1P6/8

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Se6#
  • Tries
    • 1.Sc6+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Kc5!
    • 1.Qa8?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Kxe5
        • 2.Qh8#
      • 1...d5
        • 2.Qxd5#
      • 1...e6!
    • 1.Qd8?
      • 1...Kxe5
        • 2.Qh8#
      • 1...e6
        • 2.Qxd6#
      • 1...d5
        • 2.Qxd5#
      • 1...Kc5!
    • 1.Qg8?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qg1#
      • 1...Kxe5
        • 2.Qg7#
        • 2.Qh8#
      • 1...d5
        • 2.Qxd5#
      • 1...e6!
  • Keys
    • 1.Qb8!
      • 1...Kc5
        • 2.Qa7#
      • 1...Kxe5
        • 2.Qh8#
      • 1...dxe5
        • 2.Qxb4#
      • 1...e6
        • 2.Qxd6#
      • 1...d5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::S(D)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(F)
        • P(e);::QAR1(F),XP(e)
      • Refutation
        • P(f);
    • Try
      • Q(F);P_PINP(e)
      • Vars
        • K(c);N_SPINP(e),OGATEB,S_FLIGHT,XS(E)::QAB(F)
        • P(f);N_GUARD::QAR2(F),XP(e)
        • P(e);OGATE::QAR1(F),XP(e)
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • P(e);::QAR1(F),XP(e)
      • Refutation
        • P(f);
  • Actual
    • Q(F);
    • Vars
      • K(c);S_FLIGHT::QAB(F)
      • K(c);OGATEB,P_SPINP(e),S_FLIGHT,XS(E)::QAB(F)
      • P(e);SBLOCK,XS(E)::QAR2(F),XP(b)
      • P(f);N_GUARD::QAR2(F),XP(e)
      • P(e);SBLOCK::S(D)
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).