MESON Chess Problem Database

Problem Display
PID: 173706 (8/3p2p1/1p1P2Pb/ppk1PKp1/b5R1/Np6/1P5p/7Q w - - 0 1)

Boros, Sandor

Uj Nemezdek, 1925

8/3p2p1/1p1P2Pb/ppk1PKp1/b5R1/Np6/1P5p/7Q

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Re4?
      • 1...Kd5
        • 2.Rc4#
      • 1...Kc6
        • 2.Rc4#
      • 1...b4
        • 2.Rc4#
      • 1...g4!
  • Keys
    • 1.Ke4!
      • 1...Kb4
        • 2.Kd5#
      • 1...Kc6
        • 2.Kd4#
      • 1...b4
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::R1(D)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(f);P-FLIGHT::QAB(A)+R(D)
        • K(f);P-FLIGHT::QAB(A)+R(D),DCHECK
        • P(e);N_GUARD::R1(D)
      • Refutation
        • P(g);
  • Actual
    • K(F);S_FLIGHT
    • Vars
      • K(f);S_FLIGHT::R(D)+K(F)
      • K(f);P-FLIGHT::QAB(A)+K(F)
      • P(e);SBLOCK::QAR(A)
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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).