MESON Chess Problem Database

Problem Display
PID: 26018 (8/5N2/8/6p1/6pk/2Q4P/8/7K w - - 0 1)

Zimmer, Eligiusz

The Problemist, 2001

8/5N2/8/6p1/6pk/2Q4P/8/7K

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qh8#
  • Tries
    • 1.Kg2?
      • threat
        • 2.Qh8#
      • 1...gxh3+
        • 2.Qxh3#
      • 1...Kh5!
    • 1.Qd3?
      • 1...Kh5
        • 2.Qh7#
      • 1...g3
        • 2.Qh7#
      • 1...gxh3!
    • 1.Qe3?
      • 1...Kh5
        • 2.Qxg5#
      • 1...gxh3
        • 2.Qxg5#
      • 1...g3!
  • Keys
    • 1.Qe5!
      • 1...Kxh3
        • 2.Qh2#
      • 1...Kh5
        • 2.Qxg5#
      • 1...gxh3
        • 2.Qxg5#
      • 1...g3
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR(B)
      • Vars
        • P(a);CHECK,OGATE,XP(C)::QAR1(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • P(a);SBLOCK::QAR(B)
      • Refutation
        • P(a);XP(C)
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(c)
        • P(a);SBLOCK,XP(C)::QAB1(B),XP(c)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(B)
      • K(b);P-FLIGHT,P_SPINP(c)::QAR1(B),XP(c)
      • P(a);SBLOCK,XP(C)::QAB1(B),XP(c)
      • P(a);SBLOCK::QAR(B)
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).