MESON Chess Problem Database

Problem Display
PID: 215683 (6Q1/6B1/8/6p1/8/6k1/5pB1/5K2 w - - 0 1)

Uhl, W

Pesti Hirlap, 1881

6Q1/6B1/8/6p1/8/6k1/5pB1/5K2

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh2
      • 2.Be5#
      • 2.Qb8#
  • Tries
    • 1.Bh6?
      • 1...Kh2
        • 2.Qb8#
      • 1...Kf4
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...Kh4
        • 2.Qxg5#
      • 1...g4!
    • 1.Qb3+?
      • 1...Kh2
        • 2.Be5#
        • 2.Qh3#
        • 2.Qb8#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qh3#
      • 1...Kg4!
    • 1.Qc4?
      • threat
        • 2.Be5#
      • 1...Kh2
        • 2.Be5#
        • 2.Qc7#
      • 1...g4!
  • Keys
    • 1.Bf6!
      • 1...Kh2
        • 2.Be5#
        • 2.Qb8#
      • 1...Kf4
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...Kh4
        • 2.Qxg5#
      • 1...g4
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);P_PINP(c)
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAB(D)
        • K(b);S_FLIGHT::QAB1(D),XP(c)
        • K(b);P-FLIGHT::QAR1(D),XP(c)
        • K(b);N_SPINP(c),S_FLIGHT::QAB1(D),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
        • K(b);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • B(C)
      • Refutation
        • P(c);
  • Actual
    • B(C);P_PINP(c)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::QAB1(D),XP(c)
      • K(b);P-FLIGHT::QAR1(D),XP(c)
      • K(b);S_FLIGHT::QAB1(D),XP(c)
      • P(c);SBLOCK::QAB(D)
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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).