MESON Chess Problem Database

Problem Display
PID: 16950 (1b1R1N1q/p3pr2/3P4/1Qpk1n2/p2p4/K2BPnrN/8/4R2b w - - 0 1)

Blikeng, Bjarne

1st Prize, Problemisten, 1944

1b1R1N1q/p3pr2/3P4/1Qpk1n2/p2p4/K2BPnrN/8/4R2b

#2

9 + 13

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qb7#
    • 1...Se5
      • 2.Sf4#
    • 1...e5
      • 2.e4#
  • Tries
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc6!
    • 1.Qb3+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc6
        • 2.Be4#
      • 1...c4
        • 2.Qb5#
      • 1...axb3!
  • Keys
    • 1.exd4!
      • threat
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Qxd4
        • 2.Qb7#
      • 1...S3xd4
        • 2.Sf4#
      • 1...S5xd4
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(m);SBLOCK::QAB(F)
    • S(b);SBLOCK::S(E)
    • P(j);SBLOCK::P(D)
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(f)
      • Vars
        • K(g);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • K(g);P_SPINP(f),S_FLIGHT
    • Try
      • Q(F);CHECK,N_PINP(f)
      • Vars
        • K(g);OGATE,P-FLIGHT::QAR1(F)
        • K(g);S_FLIGHT::B(C)
        • P(f);OGATEB,P_SPINP(f)::QAR2(F)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • P(D);XP(e)
    • Threat
      • QAR1(F),XP(f)
    • Vars
      • K(g);N_SPINP(f),P-FLIGHT,XP(D)::QAR1(F)
      • Q(m);SBLOCK,XP(D)::QAB(F)
      • S(b);P_PINB(C),SBLOCK,XP(D)::S(E)
      • S(h);SBLOCK,XP(D)::B(C)
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).