MESON Chess Problem Database

Problem Display
PID: 273858 (8/3p4/8/3QN3/kp6/8/1P6/1K6 w - - 0 1)

Zimmer, Eligiusz

diagrammes, 1999

8/3p4/8/3QN3/kp6/8/1P6/1K6

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qc6+?
      • 1...Kb3
        • 2.Qc2#
      • 1...Ka5
        • 2.Sc4#
      • 1...dxc6!
    • 1.Qa8+?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kb5!
    • 1.Qa5+?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kxa5!
    • 1.Qxd7+?
      • 1...Kb3
        • 2.Qd1#
      • 1...Ka5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Kb3
        • 2.Sb6#
      • 1...b3
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_CUTP(b),S_FLIGHT::QAB1(C)
        • K(a);N_GUARD,P-FLIGHT,S_CUTP(c)::S(D)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK,XP(c)
      • Vars
        • K(a);N_GUARD,S_CUTP(b),S_FLIGHT::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(a);S_FLIGHT::QAB(C)+S(D)
      • P(b);SBLOCK::QAR1(C)
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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).