MESON Chess Problem Database

Problem Display
PID: 187988 (Q7/5p2/4p3/4k2K/1B2NpP1/5n2/8/8 w - - 0 1)

Breyer, Gyula

Pesti Naplo, 1910

Q7/5p2/4p3/4k2K/1B2NpP1/5n2/8/8

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Bc3#
    • 1...Sg1
      • 2.Bc3#
    • 1...Sd2
      • 2.Bc3#
    • 1...Sh2
      • 2.Bc3#
    • 1...Sd4
      • 2.Bd6#
    • 1...Sh4
      • 2.Bc3#
    • 1...Sg5
      • 2.Bc3#
  • Tries
    • 1.Be7?
      • threat
        • 2.Bf6#
      • 1...f6
        • 2.Bxf6#
      • 1...Kd4!
  • Keys
    • 1.Sf6!
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxf6
        • 2.Qh8#
      • 1...Se1
        • 2.Qa1#
      • 1...Sg1
        • 2.Qa1#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sh2
        • 2.Qa1#
      • 1...Sd4
        • 2.Sd7#
      • 1...Sh4
        • 2.Qa1#
      • 1...Sg5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);SBLOCK::B(A)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • P(e);::B(A),XP(e)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(c);S_FLIGHT::QAR1(E)
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
      • S(a);N_GUARD::QAB(E)
      • S(a);SBLOCK::S(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).