MESON Chess Problem Database

Problem Display
PID: 155319 (4N1B1/6R1/5q1k/1R4n1/3N1nK1/2Q5/8/2B5 w - - 0 1)

Rasch Nielsen, Poul Anker

Match: Denmark - Netherlands, 1935-1936

4N1B1/6R1/5q1k/1R4n1/3N1nK1/2Q5/8/2B5

#2

8 + 4

4035 Aarsskrift for DSK 1936

SOLUTION

  • SOUND
  • Sets
    • 1...Qe7
      • 2.Sf5#
    • 1...Qd8
      • 2.Sf5#
    • 1...Qf5+
      • 2.Sxf5#
    • 1...Qa6
      • 2.Sf5#
    • 1...Qb6
      • 2.Sf5#
    • 1...Qc6
      • 2.Sf5#
    • 1...Qd6
      • 2.Sf5#
    • 1...Se2
      • 2.Qh3#
    • 1...Sfh3
      • 2.Qxh3#
    • 1...Sd5
      • 2.Qh3#
    • 1...Sfe6
      • 2.Qh3#
    • 1...Sg6
      • 2.Rh7#
    • 1...Sf3
      • 2.Rh5#
    • 1...Sgh3
      • 2.Rh5#
    • 1...Se4
      • 2.Rh5#
    • 1...Sge6
      • 2.Rh5#
    • 1...Sf7
      • 2.Rh5#
    • 1...Sh7
      • 2.Rh5#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Sf5#
      • 1...Sfe6
        • 2.Qh3#
      • 1...Sg6
        • 2.Rh7#
      • 1...Sge6!
    • 1.Qh3+?
      • 1...Sh5
        • 2.Qxh5#
      • 1...Sgxh3
        • 2.Rh5#
      • 1...Sfxh3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sf5#
      • 1...Sfe6
        • 2.Qh1#
      • 1...Sg6
        • 2.Rh7#
      • 1...Sge6
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 15
  • Sets
    • Q(c);N_GUARD::S(C)
    • Q(c);CHECK,N_GUARD::S(C),XQ(c)
    • Q(c);N_GUARD,SBLOCK::S(C)
    • S(a);N_GUARD,P_SPINS(b)::QAR(B)
    • S(a);N_GUARD,P_SPINS(b)::QAR(B),XS(a)
    • S(a);P_SPINS(b),SBLOCK::R1(F)
    • S(b);OGATE,P_SPINS(a)::R1(E)
  • Tries
    • Try
      • R(E);P_PINQ(c)
      • Threat
        • S(C)
      • Vars
        • S(a);N_GUARD,N_SPINQ(c),P_SPINS(b)::QAR(B)
        • S(a);N_SPINQ(c),P_SPINS(b),SBLOCK::R1(F)
      • Refutation
        • S(b);N_SPINQ(c),P_SPINS(a)
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(b)::QAR1(B),XS(a)
        • S(b);OGATE,P_SPINS(a),XQ(B)::R1(E)
      • Refutation
        • S(a);P_SPINS(b),XQ(B)
  • Actual
    • Q(B);P_PINQ(c)
    • Threat
      • S(C)
    • Vars
      • S(a);N_GUARD,N_SPINQ(c),P_SPINS(b)::QAR(B)
      • S(a);N_SPINQ(c),P_SPINS(b),SBLOCK::R1(F)
      • S(b);N_SPINQ(c),OGATE,P_SPINS(a)::R1(E)
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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).