MESON Chess Problem Database

Problem Display
PID: 170215 (1b5B/5pNb/6p1/Q7/5k2/3P3P/2N3K1/8 w - - 0 1)

Kupper, Josef

Tages-Anzeiger, 2004

1b5B/5pNb/6p1/Q7/5k2/3P3P/2N3K1/8

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qd2#
    • 1...g5
      • 2.Sh5#
    • 1...f5
      • 2.Se6#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qg3#
        • 2.Qe3#
      • 1...Ba7
        • 2.Qg3#
      • 1...Kg5!
    • 1.Qb4+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kg5!
    • 1.Qb6?
      • threat
        • 2.Qe3#
        • 2.Qf6#
      • 1...Ke5
        • 2.Qd4#
      • 1...Be5
        • 2.Qe3#
      • 1...Bd6
        • 2.Qe3#
      • 1...Ba7
        • 2.Qf6#
      • 1...g5
        • 2.Qe3#
        • 2.Qxb8#
      • 1...f5
        • 2.Se6#
        • 2.Qe3#
      • 1...f6
        • 2.Qe3#
        • 2.Qxf6#
      • 1...Kg5!
    • 1.Qa4+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kg5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.Qd4#
      • 1...f6
        • 2.Qxf6#
      • 1...Be5
        • 2.Qh4#
      • 1...g5
        • 2.Qxb8#
      • 1...f5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::QAB(E)
    • P(b);N_GUARD::S(F)
    • P(c);N_GUARD::S(F)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • B(e);::QAB1(E)
        • B(e);::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • P(c);::QAR2(E),XP(c)
      • B(e);SBLOCK::QAR2(E)
      • P(b);SBLOCK::QAB(E),XB(e)
      • P(c);N_GUARD,SBLOCK::S(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).