MESON Chess Problem Database

Problem Display
PID: 121450 (3K4/8/3kpn2/8/4p3/1N2N3/8/Q7 w - - 0 1)

Kauder, Jiri

Deutsche Schachzeitung, 1916

3K4/8/3kpn2/8/4p3/1N2N3/8/Q7

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qa6#
    • 1...e5
      • 2.Qa6#
  • Tries
    • 1.Qa3+?
      • 1...Kc6
        • 2.Qa6#
      • 1...Ke5!
    • 1.Qa5?
      • threat
        • 2.Qc7#
        • 2.Qc5#
      • 1...Kc6
        • 2.Qa6#
      • 1...e5
        • 2.Qb6#
        • 2.Qa6#
      • 1...Sd7
        • 2.Qc7#
      • 1...Se8
        • 2.Qc5#
      • 1...Sd5!
    • 1.Qa7?
      • threat
        • 2.Qc5#
        • 2.Qc7#
      • 1...Ke5
        • 2.Qb8#
        • 2.Qc7#
      • 1...Kc6
        • 2.Qa6#
      • 1...Sd7
        • 2.Qc7#
      • 1...Se8
        • 2.Qc5#
      • 1...e5
        • 2.Qb6#
        • 2.Qa6#
      • 1...Sd5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sc4#
      • 1...Ke5
        • 2.Qb8#
      • 1...e5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
    • P(c);SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(d);::QAB1(A)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(d);::QAB1(A)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • P(c);SBLOCK::QAR(A)
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).