MESON Chess Problem Database

Problem Display
PID: 262457 (3Rbq1B/n7/QNP2Pp1/1n1P1Pp1/1b1kB1R1/1K1NpP2/4P3/8 w - - 0 1)

Mihajloski, Zlatko

Miloseski, Bosko

Europe Echecs, 1973

3Rbq1B/n7/QNP2Pp1/1n1P1Pp1/1b1kB1R1/1K1NpP2/4P3/8

#2

14 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.f7#
    • 1...Qe7
      • 2.fxe7#
    • 1...Qxf6
      • 2.Bxf6#
    • 1...Sc3
      • 2.Qc4#
    • 1...Sc7
      • 2.Qc4#
    • 1...gxf5
      • 2.Bxf5#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Qc4#
      • 1...Qc5
        • 2.f7#
      • 1...Sxb5!
    • 1.f7+?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
  • Keys
    • 1.d6!
      • threat
        • 2.Bd5#
      • 1...Qxd6
        • 2.f7#
      • 1...Bxd6
        • 2.Qa4#
      • 1...Sxd6
        • 2.Qc4#
      • 1...gxf5
        • 2.Bxf5#
      • 1...Qe7
        • 2.fxe7#
      • 1...Sc3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::B(N)+P(L)
    • Q(i);OGATE::B(N)+P(L),XQ(i)
    • Q(i);OGATE,P_SPINQ(i),XP(L)::B(N),XQ(i)
    • S(d);OGATE::QAR1(I)
    • P(f);OGATE,XP(H)::R(F)+B(E),XP(f)
  • Tries
    • Try
      • Q(I);XS(d)
      • Threat
        • QAR1(I)
      • Vars
        • Q(i);N_GUARD::B(N)+P(L)
      • Refutation
        • S(g);XQ(I)
    • Try
      • P(L);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::B(N),XQ(i)
      • Refutation
        • Q(i);XB(N)
  • Actual
    • P(G);
    • Threat
      • R(F)+B(E)
    • Vars
      • Q(i);N_GUARD,P_SPINQ(i),XP(G)::B(N)+P(L)
      • B(b);OGATEB,P_SPINB(b),XP(G)::QAR(I)
      • S(d);OGATE,P_SPINS(d),XP(G)::QAR1(I)
      • P(f);OGATE,XP(H)::R(F)+B(E),XP(f)
      • Q(i);OGATE::B(N)+P(L),XQ(i)
      • S(d);OGATE::QAR1(I)
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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).