MESON Chess Problem Database

Problem Display
PID: 241103 (b3N2B/2n3N1/rq4p1/3pk3/1p5p/2PP1Q2/B3PP2/b6K w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Shakhmaty (Riga), 1974

b3N2B/2n3N1/rq4p1/3pk3/1p5p/2PP1Q2/B3PP2/b6K

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qa5
      • 2.Qe3#
      • 2.d4#
    • 1...Qb5
      • 2.Qe3#
      • 2.d4#
    • 1...Qc6
      • 2.Qe3#
      • 2.d4#
    • 1...Qd6
      • 2.Qe3#
      • 2.d4#
    • 1...Qe6
      • 2.Qe3#
      • 2.d4#
    • 1...Qf6
      • 2.Qe3#
      • 2.d4#
    • 1...Qb7
      • 2.Qe3#
      • 2.d4#
    • 1...Qb8
      • 2.Qe3#
      • 2.d4#
    • 1...Bc6
      • 2.Qf6#
    • 1...Se6
      • 2.Qf6#
    • 1...h3
      • 2.Qg3#
    • 1...d4
      • 2.Se6#
    • 1...g5
      • 2.Qf5#
  • Keys
    • 1.e3!
      • threat
        • 2.Qf4#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Qf6
        • 2.d4#
      • 1...Qd4
        • 2.exd4#
      • 1...Se6
        • 2.Qf6#
      • 1...d4
        • 2.Se6#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD::QAR2(G),XQ(g)
    • B(j);S_CUTQ(g)::QAB1(G)
    • S(i);S_CUTQ(g)::QAB1(G)
    • P(c);N_GUARD::QAB(G)
    • P(d);P_PINQ(G)::B(J)+S(H)
    • P(h);N_GUARD::QAR1(G)
  • Actual
    • P(C);
    • Threat
      • QAB1(G)
    • Vars
      • Q(g);OGATE,XP(C)::QAR2(G),XQ(g)
      • Q(g);N_GUARD::P(F)
      • Q(g);OGATE::P(C),XQ(g)
      • S(i);S_CUTQ(g)::QAB1(G)
      • P(d);P_PINQ(G)::B(J)+S(H)
      • P(h);N_GUARD::QAR1(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).