MESON Chess Problem Database

Problem Display
PID: 248230 (5B2/1p5P/b3N1Q1/R1p1k1p1/1Nn2pr1/p6r/K2PP1nq/6b1 w - - 0 1)

Blikeng, Bjarne

Schackvarlden, 1945

5B2/1p5P/b3N1Q1/R1p1k1p1/1Nn2pr1/p6r/K2PP1nq/6b1

#2

9 + 13

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Rxc5#
      • 2.d4#
    • 1...Sge3
      • 2.d4#
    • 1...Sh4
      • 2.h8Q#
      • 2.h8B#
    • 1...Sce3
      • 2.d4#
    • 1...Sd6
      • 2.Bg7#
  • Tries
    • 1.Sc6+?
      • 1...Kd5
        • 2.Sc7#
      • 1...bxc6!
    • 1.Sxg5?
      • threat
        • 2.Bg7#
      • 1...Kd4
        • 2.Qe4#
      • 1...Rxh7
        • 2.Sf3#
      • 1...f3!
  • Keys
    • 1.e4!
      • threat
        • 2.Qf5#
      • 1...fxe4 ep
        • 2.Rxc5#
      • 1...Sge3
        • 2.Sd3#
      • 1...Sh4
        • 2.h8Q#
        • 2.h8B#
      • 1...Sce3
        • 2.d4#
      • 1...Sd6
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);S_CUTB(a)::P(B)
    • S(b);S_CUTR(e)::P=Q
    • S(f);S_CUTB(a)::P(B)
    • S(f);SBLOCK::B(I)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(j);P-FLIGHT::S(F)
      • Refutation
        • P(m);XS(D)
    • Try
      • S(F);XP(k)
      • Threat
        • B(I)
      • Vars
        • K(j);N_SPINP(i),S_FLIGHT::QAR1(G)
        • R(e);N_GUARD,XP(H)::S(F)
      • Refutation
        • P(g);
  • Actual
    • P(C);
    • Threat
      • QAR1(G)
    • Vars
      • P(g);EP,S_CUTB(a),XP(C)::R(E),XP(i)
      • S(b);P_PINP(B),S_CUTR(e)::S(D)
      • S(b);P_PINP(B),S_CUTR(e)::P=Q
      • S(f);S_CUTB(a)::P(B)
      • S(f);SBLOCK::B(I)
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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).