MESON Chess Problem Database

Problem Display
PID: 160492 (r1n2q2/8/1BB2p2/8/p7/k7/2Q5/5K2 w - - 0 1)

Fomichev, Evgeny Vasilevich

1st HM., ASIGC, 2008-2009

r1n2q2/8/1BB2p2/8/p7/k7/2Q5/5K2

#2

4 + 6

4901 Best Problems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Bxc5#
    • 1...Qh6
      • 2.Bc5#
    • 1...Qg7
      • 2.Bc5#
    • 1...Qf7
      • 2.Bc5#
    • 1...Qd8
      • 2.Bc5#
    • 1...Qe8
      • 2.Bc5#
    • 1...Qg8
      • 2.Bc5#
    • 1...Qh8
      • 2.Bc5#
    • 1...Sd6
      • 2.Bc5#
    • 1...Se7
      • 2.Bc5#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qb2#
      • 1...Kb4
        • 2.Qc3#
      • 1...Rb8
        • 2.Qxa4#
      • 1...Qb4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qc3#
      • 1...Kb4
        • 2.Qb2#
      • 1...Qb4
        • 2.Qa2#
      • 1...Qc5
        • 2.Bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::B(C),XQ(f)
    • Q(f);N_GUARD::B(C)
    • S(e);S_CUTQ(f)::B(C)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • R(d);N_GUARD::QAR1(B),XP(b)
      • Refutation
        • Q(f);
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • Q(f);SBLOCK::QAR1(B)
      • Q(f);N_GUARD::B(C),XQ(f)
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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).