MESON Chess Problem Database

Problem Display
PID: 208104 (2K5/8/3k1p2/1Bppb1N1/8/4B3/8/4Q3 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1874

2K5/8/3k1p2/1Bppb1N1/8/4B3/8/4Q3

#2

5 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Bxc5#
    • 1...Bf4
      • 2.Bxf4#
    • 1...c4
      • 2.Qb4#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qc7#
        • 2.Qd8#
      • 1...Ke7
        • 2.Qd8#
      • 1...Ba1
        • 2.Qc7#
      • 1...Bb2
        • 2.Qc7#
      • 1...Bh2
        • 2.Qc7#
      • 1...Bc3
        • 2.Qc7#
      • 1...Bg3
        • 2.Qc7#
      • 1...Bd4
        • 2.Qc7#
      • 1...Bf4
        • 2.Qc7#
      • 1...d4
        • 2.Qd8#
      • 1...fxg5!
  • Keys
    • 1.Bd4!
      • 1...Ke7
        • 2.Bxc5#
      • 1...Bxd4
        • 2.Sf7#
        • 2.Qe6#
      • 1...cxd4
        • 2.Qb4#
      • 1...fxg5
        • 2.Qxe5#
      • 1...Bh2
        • 2.Sf7#
        • 2.Qe6#
      • 1...Bg3
        • 2.Sf7#
        • 2.Qe6#
      • 1...Bf4
        • 2.Sf7#
        • 2.Qe6#
      • 1...c4
        • 2.Qb4#
      • 1...f5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::B(B),XP(a)
    • B(c);OGATEB::B(B),XB(c)
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
        • B(c);::QAB1(A)
        • P(b);::QAR2(A)
      • Refutation
        • P(e);XS(D)
  • Actual
    • B(B);
    • Vars
      • K(d);P_SPINB(c),S_FLIGHT::B(B),XP(a)
      • P(a);OGATEB,XB(B)::QAB(A)
      • P(e);N_GUARD,XS(D)::QAB1(A),XB(c)
      • P(a);OGATEB::QAB(A)
      • P(e);N_GUARD::QAB1(A),XB(c)
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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).