MESON Chess Problem Database

Problem Display
PID: 5958 (3Q4/4Pp2/K3NrpB/n3p3/2p1k1BR/2n4R/4r1P1/5bb1 w - - 0 1)

Larsen, Karl Adolf Koefoed

5th HM., Ajedrez Argentino, 1926

3Q4/4Pp2/K3NrpB/n3p3/2p1k1BR/2n4R/4r1P1/5bb1

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ref2
      • 2.Re3#
    • 1...Rff2
      • 2.Sc5#
    • 1...Rf3
      • 2.gxf3#
    • 1...Rf4
      • 2.Sg5#
    • 1...Rf5
      • 2.Bf3#
    • 1...Rxe6+
      • 2.Bxe6#
  • Keys
    • 1.e8S!
      • threat
        • 2.Sxf6#
      • 1...Rxe6+
        • 2.Bxe6#
      • 1...Rf4
        • 2.Sg5#
      • 1...Ref2
        • 2.Re3#
      • 1...Rff2
        • 2.Sc5#
      • 1...Rf3
        • 2.gxf3#
      • 1...Rf5
        • 2.Bf3#
      • 1...Sd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,S_CUTB(b)::R1(B)
    • R(i);N_PINS(F)::S(F)
    • R(i);N_PINS(F),OGATE::P(A),XR(i)
    • R(i);N_PINS(F),SBLOCK::S(F)
    • R(i);N_PINS(F),SBLOCK::R(D)+B(C),DCHECK
    • R(i);CHECK,OGATE,XS(F)::R(D)+B(C),XR(i)
  • Actual
    • P(H);
    • Threat
      • S(H),XR(i)
    • Vars
      • R(i);CHECK,OGATE,XS(F)::R(D)+B(C),XR(i)
      • R(i);N_PINS(F),SBLOCK::S(F)
      • R(c);N_GUARD,S_CUTB(b)::R1(B)
      • R(i);N_PINS(F)::S(F)
      • R(i);N_PINS(F),OGATE::P(A),XR(i)
      • R(i);N_PINS(F),SBLOCK::R(D)+B(C),DCHECK
      • S(d);SBLOCK::S(H)
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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).