Problem Display
PID: 9374 (5Q2/2pbpN2/3p4/8/3kP1R1/2R5/1K6/6b1 w - - 0 1)

Bettmann, Henry Wald

Smith, William James

Sydney Telegraph, 1901

5Q2/2pbpN2/3p4/8/3kP1R1/2R5/1K6/6b1

#2

6 + 6


3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997
422 Suomen Tehtavaniekat 2007
5454 Near Snap 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Be6
      • 2.Qg7#
      • 2.Qh8#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sf3#
      • 1...Ke5
        • 2.Qg7#
        • 2.Qh8#
      • 1...Bxg4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qd5#
      • 1...Bc6
        • 2.Qa7#
      • 1...Be6
        • 2.Qh8#
      • 1...d5
        • 2.Qxd5#
      • 1...c6
        • 2.Qa4#
      • 1...e6
        • 2.e5#

This anticipates 227504(1926), 248090(1944), 232752(1976), 205470(2017)

This is a version

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Refutation
        • B(e);XR(D)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • B(e);S_CUTP(d)::QAB(F)
      • B(e);S_CUTP(f)::QAB(F)
      • P(c);::QAR1(F),XP(c)
      • P(d);S_CUTB(e)::QAR(F)
      • P(f);S_CUTB(e)::R(D)+P(C)


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).