MESON Chess Problem Database

Problem Display
PID: 255961 (K1BB4/3N2p1/2pk4/5Qp1/3bp3/2Nb4/1p6/8 w - - 0 1)

Agarkov, Anatoly Yakovlevich

Buletin Problemistic, 1983

K1BB4/3N2p1/2pk4/5Qp1/3bp3/2Nb4/1p6/8

#2

6 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sxe4#
    • 1...Be2
      • 2.Sxe4#
    • 1...Bc4
      • 2.Sxe4#
    • 1...Bb5
      • 2.Sxe4#
    • 1...Ba6
      • 2.Sxe4#
    • 1...Bg1
      • 2.Qg6#
      • 2.Qe5#
    • 1...Bf2
      • 2.Qg6#
      • 2.Qe5#
    • 1...Be3
      • 2.Qg6#
      • 2.Qe5#
    • 1...Bc5
      • 2.Qg6#
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bb6
      • 2.Qg6#
      • 2.Qe5#
    • 1...Ba7
      • 2.Qg6#
      • 2.Qe5#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qf4+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sb6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Be5
        • 2.Qxe5#
      • 1...gxf4!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Se5#
      • 1...Bxc5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sf7#
      • 1...Kc5
        • 2.Qf8#
      • 1...Bxe5
        • 2.Qf8#
      • 1...Bc4
        • 2.Sxc4#
      • 1...c5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(b);N_GUARD::S(A),XP(d)
    • B(c);N_GUARD::QAB1(B),XB(c)
    • P(f);N_GUARD::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(B),XB(c)
      • Refutation
        • P(e);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);N_GUARD,P-FLIGHT,S_CUTB(c)::B(E)+S(C)
      • Refutation
        • B(c);XQ(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(g);N_GUARD,S_FLIGHT::QAB(B)
      • B(c);SBLOCK,XS(C)::QAB(B)
      • B(b);N_GUARD::S(C),XB(b)
      • P(f);SBLOCK::QAR1(B)
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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).