MESON Chess Problem Database

Problem Display
PID: 158188 (8/8/7B/3p4/4k1K1/8/2P5/Q5b1 w - - 0 1)

Back, Par-Erik

Suddeutsche Sonntagspost, 1936

8/8/7B/3p4/4k1K1/8/2P5/Q5b1

#2

4 + 3

15148 Sadier Collection 2016
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Bg7?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe1#
      • 1...Bh2
        • 2.Qd4#
        • 2.Qe1#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d4!
    • 1.Qe1+?
      • 1...Be3
        • 2.Qxe3#
      • 1...Kd4!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qe5#
      • 1...d4
        • 2.Qa8#
      • 1...Bd4
        • 2.Qh1#

This anticipates 47998(1944), 93276(1961)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(a);N_GUARD::QAR1(A),XB(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • P(c);OGATEB,SBLOCK::QAB(A)
      • B(a);OGATE,SBLOCK::QAB(A)
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).