MESON Chess Problem Database

Problem Display
PID: 99498 (5b2/2n2Q2/P1bppn2/Ppk5/1N4RK/Rq1P4/2N2rpB/8 w - - 0 1)

Fleck, Ferenc

Szoghy, Jozsef

Magyar Sakkelet, 1961

5b2/2n2Q2/P1bppn2/Ppk5/1N4RK/Rq1P4/2N2rpB/8

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Rc3#
    • 1...Qb1
      • 2.Rc3#
    • 1...Qc3
      • 2.Rxc3#
    • 1...Sh5
      • 2.Qxf2#
    • 1...Sd7
      • 2.Qxf2#
    • 1...Sh7
      • 2.Qxf2#
    • 1...Sfe8
      • 2.Qxf2#
    • 1...Sg8
      • 2.Qxf2#
    • 1...Sxa6
      • 2.Qa7#
    • 1...Sce8
      • 2.Qa7#
    • 1...d5
      • 2.Qxf8#
  • Tries
    • 1.Qxc7?
      • threat
        • 2.Qb6#
        • 2.Qxc6#
        • 2.Qa7#
      • 1...Qd5
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sd5
        • 2.Qxc6#
      • 1...Sd7
        • 2.Qxc6#
      • 1...Qxb4!
  • Keys
    • 1.Rg5+!
      • 1...Qd5
        • 2.Rc3#
      • 1...Rf5
        • 2.Bg1#
      • 1...Bd5
        • 2.Qxc7#
      • 1...Sfd5
        • 2.Qxf2#
      • 1...Scd5
        • 2.Qa7#
      • 1...d5
        • 2.Qxf8#
      • 1...e5
        • 2.d4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 10
  • Sets
    • Q(c);OGATE::R(C)
    • Q(c);OGATE::R(C),XQ(c)
    • S(i);OGATE::QAB(J),XR(a)
    • S(j);OGATE,XP(I)::QAB(J)
    • S(j);OGATE::QAB(J)
    • P(g);OGATEB::QAB(J),XB(k)
  • Tries
    • Try
      • Q(J);P_PINB(f),XS(j)
      • Threat
        • DUALS(3)
      • Vars
        • S(i);::QAR1(J),XB(f)
      • Refutation
        • Q(c);P_PINR(F),XS(E)
  • Actual
    • R(F);CHECK
    • Vars
      • Q(c);OGATE,P_SPINQ(c)::R(C)
      • R(a);P_SPINR(a),S_CUTB(f),S_CUTP(g),S_CUTP(h),S_CUTQ(c),S_CUTS(i),S_CUTS(j)::B(B)
      • B(f);P_SPINB(f),S_CUTP(g),S_CUTP(h),S_CUTQ(c),S_CUTR(a),S_CUTS(i)::QAR2(J),XS(j)
      • S(i);OGATE,P_SPINS(i)::QAB(J),XR(a)
      • S(j);OGATE,P_SPINS(j)::QAB(J)
      • P(g);P_SPINP(g),S_CUTB(f),S_CUTP(h),S_CUTQ(c),S_CUTR(a),S_CUTS(i),S_CUTS(j)::QAB(J),XB(k)
      • P(h);P_SPINP(h)::P(D)
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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).