MESON Chess Problem Database

Problem Display
PID: 41028 (6n1/K3P1R1/1p2N2q/4Pk1p/Q1N3pP/3R4/6B1/B6b w - - 0 1)

Avner, Uri

1st Prize, Springaren, 1993

6n1/K3P1R1/1p2N2q/4Pk1p/Q1N3pP/3R4/6B1/B6b

#2

11 + 7

3681 FIDE Album (1992-1994) 2001
17424 Close Encounters with the Chess Pieces (Avner) 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qd7#
    • 1...Qxe6
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kxe6
        • 2.Rd6#
        • 2.Qb3#
        • 2.Qc6#
        • 2.Qd7#
        • 2.Qa2#
        • 2.Qc4#
      • 1...Qxe3!
    • 1.Qa2?
      • threat
        • 2.Sd6#
      • 1...Kxe6
        • 2.Se3#
      • 1...Qxe6
        • 2.Qf2#
      • 1...Qxg7!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Se3#
      • 1...Kxf4
        • 2.Sd6#
      • 1...Qxf4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);OGATEB,S_FLIGHT,XS(H)::QAB1(D)
    • Q(f);N_GUARD,SBLOCK,XS(H)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • Q(f);XS(E)
    • Try
      • Q(D);
      • Threat
        • S(E)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAB(D)+S(E)
        • Q(f);N_GUARD,SBLOCK,XS(H)::QAR(D)
      • Refutation
        • Q(f);P_PINP(J),XR(K)
  • Actual
    • S(H);
    • Threat
      • S(E)
    • Vars
      • K(c);P-FLIGHT,XS(H)::QAR(D)+S(E)
      • Q(f);N_GUARD,SBLOCK,XS(H)::QAB(D)
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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).