MESON Chess Problem Database

Problem Display
PID: 119778 (n2N4/8/rkP5/p7/P4Q2/4K3/8/8 w - - 0 1)

Nemo, Ottmar (Weiss, Ottmar)

Deutsche Schachzeitung, 1889

n2N4/8/rkP5/p7/P4Q2/4K3/8/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd4#
    • 1...Sc7
      • 2.Qd4#
  • Tries
    • 1.Qd6?
      • 1...Ra7
        • 2.c7#
      • 1...Sc7
        • 2.Qd4#
      • 1...Ka7!
  • Keys
    • 1.c7!
      • 1...Kc5
        • 2.Qd4#
      • 1...Ka7
        • 2.c8S#
      • 1...Sxc7
        • 2.Qd4#
      • 1...Ra7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(C)
    • S(d);SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • R(b);SBLOCK::QAR(C)+P(D)
        • S(d);SBLOCK::QAB(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • K(c);S_FLIGHT::P=S
      • S(d);SBLOCK,XP(D)::QAB(C)
      • R(b);SBLOCK::QAR2(C)
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).