MESON Chess Problem Database

Problem Display
PID: 178589 (8/5N2/3P2r1/1B1p1b1N/4k3/1P1R1p2/7n/1Q1K2b1 w - - 0 1)

Hermanson, Halvar

Boletim da UBP, 1981

8/5N2/3P2r1/1B1p1b1N/4k3/1P1R1p2/7n/1Q1K2b1

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.Rd2#
    • 1...Bd4
      • 2.Rc3#
    • 1...d4
      • 2.Bc6#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qe5#
      • 1...d4
        • 2.Qa8#
      • 1...Re6
        • 2.Sg5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sg4!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qf4#
      • 1...d4
        • 2.Qc6#
      • 1...Rg4
        • 2.Sf6#
      • 1...Be3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB(A)+R(D)
    • P(e);OGATEB::B(E)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(e);OGATEB::QAB(A)
        • R(g);N_GUARD::S(H)
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • P(e);OGATEB::QAB(A)
      • R(g);N_GUARD::S(F)
      • B(a);N_GUARD::QAR1(A),XB(a)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).