MESON Chess Problem Database

Problem Display
PID: 103487 (Kb6/3p1p2/1pr3r1/3pnB2/pP1k2bQ/N2ppp2/1P5P/5N2 w - - 0 1)

Biscan, Dragutin

Mat 05. TT, 1977

Kb6/3p1p2/1pr3r1/3pnB2/pP1k2bQ/N2ppp2/1P5P/5N2

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sb5#
    • 1...e2
      • 2.Qf2#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb5#
      • 1...exd2
        • 2.Qf2#
      • 1...Sc4
        • 2.Sxf3#
      • 1...e2
        • 2.Qf2#
      • 1...b5
        • 2.Sxb5#
      • 1...Rc5!
    • 1.Qg3?
      • threat
        • 2.Qf4#
      • 1...Sc4
        • 2.Sb5#
      • 1...Bxf5!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qxe3#
      • 1...Sc4
        • 2.Qc3#
      • 1...e2
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(j);SBLOCK::S(D)
    • P(b);OGATEB::QAB(F)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(D)
      • Vars
        • P(b);OGATEB,XS(A)::QAB(F)
        • S(h);N_GUARD::S(A),XP(c)
        • P(b);OGATEB::QAB(F)
        • P(i);::S(D),XP(i)
      • Refutation
        • R(j);
    • Try
      • Q(F);N_PINB(f)
      • Threat
        • QAR2(F)
      • Vars
        • S(h);SBLOCK::S(D)
      • Refutation
        • B(f);XB(G)
  • Actual
    • Q(F);N_PINB(f)
    • Threat
      • QAB1(F),XP(b)
    • Vars
      • S(h);S_CUTR(j)::QAB1(F)
      • P(b);OGATEB::QAB(F)
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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).