MESON Chess Problem Database

Problem Display
PID: 203477 (4KBB1/8/4P1n1/3kP3/Q5N1/8/2N5/6bq w - - 0 1)

Nagy, Odon

4th HM., Uj Nemezdek, 1924

4KBB1/8/4P1n1/3kP3/Q5N1/8/2N5/6bq

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sce3#
    • 1...Be3
      • 2.Scxe3#
    • 1...Bc5
      • 2.e7#
    • 1...Sxe5
      • 2.Sf6#
  • Tries
    • 1.Sge3+?
      • 1...Kxe5
        • 2.Qd4#
      • 1...Bxe3!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Qc4#
      • 1...Sxe5
        • 2.Sf6#
      • 1...Bd4
        • 2.Qa8#
      • 1...Qe4
        • 2.Qd7#
      • 1...Bc5
        • 2.e7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);SBLOCK::B(H)+P(E)
    • S(d);SBLOCK,XP(D)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(D)::QAB1(B)
      • Refutation
        • B(a);XS(C)
  • Actual
    • S(A);
    • Threat
      • QAB1(B)
    • Vars
      • S(d);SBLOCK,XP(D)::S(C)
      • B(a);SBLOCK::QAB(B)
      • Q(b);SBLOCK::QAR2(B)
      • B(a);SBLOCK::B(H)+P(E)
HTML5 logo

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).