MESON Chess Problem Database

Problem Display
PID: 180112 (3K4/1b2NpN1/np1k2p1/8/1b1P2n1/8/2Q5/8 w - - 0 1)

Pallasz, Edward

Parzuch, Stefan

Polski Zwiazek Szachowy, 2017

3K4/1b2NpN1/np1k2p1/8/1b1P2n1/8/2Q5/8

#2

5 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sc8#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bc8
      • 2.Qc6#
    • 1...Sh2
      • 2.Qxh2#
    • 1...Se3
      • 2.Qh2#
    • 1...Sf6
      • 2.Qh2#
    • 1...Sh6
      • 2.Qh2#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sb8
      • 2.Qc7#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Se8#
        • 2.Qd7#
      • 1...Bc6
        • 2.Sc8#
      • 1...Bc8
        • 2.Se8#
        • 2.Qd5#
      • 1...Se5
        • 2.Se8#
        • 2.Qxe5#
        • 2.Qf6#
      • 1...Sf6
        • 2.Qf4#
        • 2.Qe5#
        • 2.Qxf6#
      • 1...Sc5
        • 2.Se8#
      • 1...Sc7
        • 2.Qd7#
      • 1...Sb8
        • 2.Se8#
      • 1...gxf5!
    • 1.Qa2?
      • threat
        • 2.Se8#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Sc8#
      • 1...Sf6
        • 2.Qh2#
      • 1...Sc7!
    • 1.Qh2+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Sxh2!
    • 1.Qc4?
      • threat
        • 2.Se8#
      • 1...Bd5
        • 2.Sc8#
        • 2.Qxd5#
      • 1...Bc6
        • 2.Sc8#
        • 2.Qxc6#
      • 1...Sc7
        • 2.Qxb4#
        • 2.Qxc7#
      • 1...Sf6!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Se8#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Sc8#
      • 1...Sf6
        • 2.Qg3#
      • 1...Sc7
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • B(g);N_GUARD,SBLOCK::S(C)
    • B(g);N_GUARD::QAR1(A),XB(g)
    • B(g);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAB(A),XS(b)
    • S(b);N_GUARD::QAB(A)
    • S(c);N_GUARD::QAB1(A),XS(c)
    • S(c);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);N_GUARD,SBLOCK::S(C)
        • S(c);::S(D)
        • S(c);::QAR1(A)
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • B(g);N_GUARD::QAR1(A),XB(g)
        • B(g);N_GUARD,SBLOCK::S(C)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • B(g);N_GUARD::QAR1(A),XB(g)
      • B(g);N_GUARD,SBLOCK::S(C)
      • S(b);N_GUARD::QAB(A)
      • S(c);N_GUARD::QAB(A),XB(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).