MESON Chess Problem Database

Problem Display
PID: 194214 (Q7/1p1B4/1b1p4/2k5/8/3K4/8/8 w - - 0 1)

Palitzsch, Friedrich Martin

Deutsches Wochenschach, 1917

Q7/1p1B4/1b1p4/2k5/8/3K4/8/8

#2

3 + 4

6490 yacpdb 2019
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qa3#
      • 2.Qf8#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qd4#
      • 1...Kb4
        • 2.Qc3#
      • 1...d5
        • 2.Qa3#
      • 1...Kd5!
    • 1.Qa4?
      • threat
        • 2.Qb5#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Ba5
        • 2.Qb5#
        • 2.Qd4#
      • 1...Ba7
        • 2.Qb5#
        • 2.Qd4#
      • 1...Bc7
        • 2.Qb5#
        • 2.Qd4#
      • 1...Bd8
        • 2.Qb5#
        • 2.Qd4#
      • 1...d5
        • 2.Qa3#
      • 1...Kd5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qd4#
      • 1...Kb4
        • 2.Qc3#
      • 1...Kd5
        • 2.Qh5#
      • 1...d5
        • 2.Qf8#

Anticipated by 181085(1904)

This anticipates 247699(1949)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • P(c);SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR(C)
      • P(c);OGATEB,SBLOCK::QAB(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).