MESON Chess Problem Database

Problem Display
PID: 166429 (2B3Rr/3R4/5P2/1K1Q2br/8/7k/4PBN1/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Aarsskrift for DSK, 1940

2B3Rr/3R4/5P2/1K1Q2br/8/7k/4PBN1/8

#2

9 + 4

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Rd6#
      • 2.Ra7#
      • 2.Rb7#
      • 2.Rc7#
      • 2.Re7#
      • 2.Rf7#
      • 2.Rdg7#
      • 2.Rh7#
      • 2.Rdd8#
      • 2.Qf3#
      • 2.Qe6#
    • 1...R5h7
      • 2.Rxh7#
    • 1...Bh6
      • 2.Qxh5#
  • Keys
    • 1.Bg1!
      • threat
        • 2.Qf3#
      • 1...Kg3
        • 2.Qf3#
      • 1...Kg4
        • 2.Qf3#
      • 1...Bxf6
        • 2.Rh7#
      • 1...Bc1
        • 2.Rh7#
      • 1...Bd2
        • 2.Rh7#
      • 1...Be3
        • 2.Rh7#
      • 1...Bf4
        • 2.Rh7#
      • 1...Bh4
        • 2.Sf4#
      • 1...Bh6
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(c);::B(H)+R(G),DCHECK,XR(c)
    • B(b);OGATE,P_PINQ(E)::QAR2(E),XR(c)
  • Actual
    • B(B);
    • Threat
      • QAR2(E)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(b)::QAR1(E)
      • K(a);P_SPINB(b),S_FLIGHT::QAB1(E)
      • B(b);P_PINQ(E),XP(F)::B(H)+R(G)
      • B(b);P_PINQ(E)::B(H)+R(G)
      • B(b);N_GUARD,P_PINQ(E),SBLOCK::S(C)
      • B(b);OGATE,P_PINQ(E)::QAR2(E),XR(c)
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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).