MESON Chess Problem Database

Problem Display
PID: 76417 (8/1b6/8/k1K2Q2/8/8/8/8 w - - 0 1)

Lakeland, Rev T

The Tablet, 1929

(First published on Sat Jan 19 1929)

8/1b6/8/k1K2Q2/8/8/8/8

#2

2 + 2

5454 Near Snap 2009
3713 Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qa2#
        • 2.Qa1#
        • 2.Qb5#
      • 1...Ka4
        • 2.Qa2#
        • 2.Qb4#
      • 1...Ka6
        • 2.Qa2#
        • 2.Qa1#
        • 2.Qb6#
      • 1...Bd5
        • 2.Qb5#
      • 1...Ba6
        • 2.Qa2#
        • 2.Qa1#
        • 2.Qb4#
      • 1...Bc6!
    • 1.Qd7?
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Qa4#
      • 1...Bc6
        • 2.Qa7#
      • 1...Ba6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qa2#
      • 1...Ka4
        • 2.Qa2#
      • 1...Ka6
        • 2.Qa2#
      • 1...Bc6
        • 2.Qa7#
      • 1...Bd5
        • 2.Qa7#

Anticipated by 2879(1899), 95235(1899)

This anticipates 212984(1978), 267460(2013)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • B(b);::QAR1(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(b);OGATE::QAR2(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • K(a);P-FLIGHT::QAR(B)
      • B(b);OGATE::QAR2(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).