MESON Chess Problem Database

Problem Display
PID: 172114 (8/4K3/4R3/1p1k1pp1/1P1P4/Nnp1bn2/3Q4/2qR4 w - - 0 1)

Apro, Laszlo

Probleemblad, 1959

8/4K3/4R3/1p1k1pp1/1P1P4/Nnp1bn2/3Q4/2qR4

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sbxd4
      • 2.Qa2#
    • 1...Sfxd4
      • 2.Qg2#
  • Keys
    • 1.Qd3!
      • threat
        • 2.Rd6#
      • 1...Bxd4
        • 2.Qxf3#
      • 1...Sbxd4
        • 2.Qxb5#
      • 1...Sfxd4
        • 2.Qxf5#
      • 1...Bf4
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATEB,P_SPINS(b),XP(E)::QAB(B)
    • S(e);OGATEB,P_SPINS(e),XP(E)::QAB(B)
  • Actual
    • Q(B);
    • Threat
      • R1(F)
    • Vars
      • B(d);OGATE,P_SPINB(d),XP(E)::QAB(B),XS(e)
      • S(b);N_GUARD,P_SPINS(b),XP(E)::QAR2(B),XP(f)
      • S(e);N_GUARD,P_SPINS(e),XP(E)::QAR2(B),XP(h)
      • B(d);OGATE::QAB(B),XS(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).