MESON Chess Problem Database

Problem Display
PID: 175208 (4K3/B1pp4/2k5/2P5/4N3/1P6/4B3/Q7 w - - 0 1)

Lybeck, Carl A

Boston Sunday Post, 1902

4K3/B1pp4/2k5/2P5/4N3/1P6/4B3/Q7

#2

7 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qa6#
  • Keys
    • 1.Bf3!
      • threat
        • 2.Sd6#
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Sg5#
      • 1...Kb7
        • 2.Sd6#
      • 1...d5
        • 2.Qa6#
      • 1...d6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(A)
  • Actual
    • B(B);
    • Threat
      • B(B)+S(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::B(B)+S(D)
      • K(a);S_FLIGHT::B(B)+S(D),DCHECK
      • P(c);SBLOCK::QAR2(A)
      • P(c);::B(B)+S(D),XP(c)
HTML5 logo

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).