MESON Chess Problem Database

Problem Display
PID: 189739 (5B2/2p5/5NPp/3Pkp2/np2Np2/5b2/7K/6Q1 w - - 0 1)

Dunka, Gyorgy Jusztin

1st Prize, Alkotmany, 1912

5B2/2p5/5NPp/3Pkp2/np2Np2/5b2/7K/6Q1

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qa1#
    • 1...Sb6
      • 2.Qa1#
    • 1...c5
      • 2.Bd6#
    • 1...c6
      • 2.Bd6#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Bd4#
        • 2.Qd4#
      • 1...Bxe4
        • 2.Qd4#
      • 1...Sxc5
        • 2.Qa1#
      • 1...fxe4!
    • 1.Qa1+?
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sc3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Scd7#
      • 1...Kxf6
        • 2.Sd7#
      • 1...Bxd5
        • 2.Sfd7#
      • 1...Sxc5
        • 2.Qa1#
      • 1...Sb6
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::QAB(A)
    • P(h);N_GUARD::B(G)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(C)::QAB1(A)
        • S(b);N_GUARD,XB(G)::QAB(A)
      • Refutation
        • P(f);XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(A),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);S_FLIGHT,XS(E)::S(C)
      • B(a);SBLOCK,XP(D)::S(E)
      • S(b);N_GUARD,XS(C)::QAB(A)
      • S(b);N_GUARD::QAB(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).