MESON Chess Problem Database

Problem Display
PID: 172099 (1BB5/3r1pp1/4r1p1/2b1NkP1/5P1K/1Q1Pp1P1/8/8 w - - 0 1)

Apro, Laszlo

Tijdschrift vd KNSB, 1932

1BB5/3r1pp1/4r1p1/2b1NkP1/5P1K/1Q1Pp1P1/8/8

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qxf7#
    • 1...Re8
      • 2.Qxf7#
    • 1...Rxd3
      • 2.Qxd3#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qg4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...e2!
  • Keys
    • 1.Sc6!
      • threat
        • 2.g4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Red6
        • 2.Se7#
      • 1...Re5
        • 2.Qxf7#
      • 1...Rdd6
        • 2.Se7#
      • 1...Rc7
        • 2.Qd5#
      • 1...Bd6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATE,P_SPINR(f),XS(F)::QAR2(A),XP(g)
    • R(d);OGATE,P_SPINR(f)::QAR2(A),XP(g)
    • R(f);OGATE,P_SPINR(d),XP(B)::QAB(A),XR(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(f);OGATE,P_SPINR(d),XP(B)::QAB(A),XR(f)
      • Refutation
        • P(a);
  • Actual
    • S(F);
    • Threat
      • P(C)
    • Vars
      • R(f);OGATE,P_SPINR(d),XP(B)::QAB(A),XR(f)
      • R(d);N_GUARD,P_SPINR(f),S_CUTB(b)::S(F)
      • R(d);OGATE,P_SPINR(f)::QAR2(A),XP(g)
      • R(f);N_GUARD,P_SPINR(d),S_CUTB(b)::S(F)
      • R(f);N_GUARD,P_SPINR(d)::QAR2(A)
      • B(b);N_GUARD,S_CUTR(f)::S(F)
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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).