MESON Chess Problem Database

Problem Display
PID: 178607 (1B6/1Q1p4/7r/3nN2p/N2k1np1/4pP2/B3P3/4b2K w - - 0 1)

Nemeth, Gyula

Boletim da UBP, 1982

1B6/1Q1p4/7r/3nN2p/N2k1np1/4pP2/B3P3/4b2K

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Qxd5#
    • 1...Sg2
      • 2.Qxd5#
    • 1...Sd3
      • 2.Qxd5#
    • 1...Sh3
      • 2.Qxd5#
    • 1...Se6
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qxd5#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sb4
      • 2.Qe4#
    • 1...Sb6
      • 2.Qe4#
    • 1...Sf6
      • 2.Qb6#
      • 2.Qa7#
    • 1...Sc7
      • 2.Qe4#
    • 1...Se7
      • 2.Qe4#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Qb2+?
      • 1...Sc3
        • 2.Qb4#
      • 1...Bc3!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sf6
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • S(d);N_GUARD,XP(C)::QAR1(G),XS(f)
    • S(d);N_GUARD::QAR1(G),XS(f)
    • S(f);N_GUARD,S_CUTB(a)::QAR2(G)
    • S(f);OGATE::QAR1(G)
    • P(i);N_GUARD,S_CUTR(h)::S(F)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f),S_CUTB(a)::QAR2(G)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • P(e);XP(D)::S(F),XP(e)
      • S(d);N_GUARD::QAR1(G),XS(d)
      • S(f);N_GUARD,S_CUTB(a)::QAR2(G)
      • S(f);N_GUARD,S_CUTR(h)::QAB(G)
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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).