MESON Chess Problem Database

Problem Display
PID: 178242 (1K6/4p1Q1/2Bk4/1P6/3N4/8/8/8 w - - 0 1)

Zimmer, Eligiusz

Vratnica-64, 2007

1K6/4p1Q1/2Bk4/1P6/3N4/8/8/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qf8#
  • Tries
    • 1.Sb3?
      • 1...e6
        • 2.Qc7#
      • 1...e5
        • 2.Qf6#
        • 2.Qd7#
      • 1...Ke6!
    • 1.Sf5+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6!
    • 1.Qg3+?
      • 1...e5
        • 2.Qa3#
      • 1...Kc5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6
        • 2.Qg6#
      • 1...e6
        • 2.Qf8#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,SBLOCK::QAB(D)
  • Tries
    • Try
      • S(A);
      • Vars
        • P(b);OGATE,SBLOCK::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAB(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR2(D)
      • P(b);OGATEB,SBLOCK::QAB(D)
      • P(b);::QAB1(D),XP(b)
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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).