MESON Chess Problem Database

Problem Display
PID: 201720 (4K3/6B1/p3k1nn/2Pp2R1/3p1p2/5N2/2p1P1q1/rb3Qb1 w - - 0 1)

Jakab, Arpad

Uj Nemezdek, 1922

4K3/6B1/p3k1nn/2Pp2R1/3p1p2/5N2/2p1P1q1/rb3Qb1

#2

7 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sxd4#
    • 1...Sh4
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Se7
      • 2.Re5#
    • 1...Sf8
      • 2.Re5#
    • 1...Sh8
      • 2.Re5#
  • Keys
    • 1.e4!
      • threat
        • 2.exd5#
      • 1...Qxf3
        • 2.Rxg6#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...dxe4
        • 2.Qc4#
      • 1...dxe4 ep
        • 2.Sd4#
      • 1...fxe4 ep
        • 2.Sxd4#
      • 1...Ba2
        • 2.Qxa6#
      • 1...Se5
        • 2.Rxe5#
      • 1...Se7
        • 2.Re5#
      • 1...Sf5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::S(C),XP(f)
    • S(k);N_GUARD::R1(E)
    • S(k);N_GUARD::R1(E),XS(k)
  • Actual
    • P(B);
    • Threat
      • P(B),XP(h)
    • Vars
      • Q(e);N_GUARD,XS(C)::R(E),XS(k)
      • Q(e);XR(E)::S(C),XQ(e)
      • P(h);OGATEB,XP(B)::QAB(A)
      • P(f);EP,S_CUTB(c),XP(B)::S(C)
      • P(g);EP,S_CUTB(c),XP(B)::S(C),XP(f)
      • B(b);S_CUTR(a)::QAR(A),XP(i)
      • S(k);N_GUARD::R1(E),XS(k)
      • S(k);N_GUARD::R1(E)
      • S(l);OGATE::P(B),XS(l)
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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).