MESON Chess Problem Database

Problem Display
PID: 170950 (8/Q7/BB6/8/7p/5b1r/3P2pN/2K1k2n w - - 0 1)

Berghmans, Josef

1st Prize, Vlaamse Problemistenbond, 1930

8/Q7/BB6/8/7p/5b1r/3P2pN/2K1k2n

#2

6 + 6

3713 Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Bxf2#
    • 1...Sg3
      • 2.Sxf3#
      • 2.Bf2#
  • Tries
    • 1.Qe7+?
      • 1...Be2
        • 2.Qxe2#
      • 1...Be4!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Qg1#
      • 1...g1Q
        • 2.Qxg1#
      • 1...g1S
        • 2.Qxg1#
      • 1...g1B
        • 2.Qxg1#
      • 1...g1R
        • 2.Qxg1#
      • 1...Be2
        • 2.d3#
      • 1...Sf2
        • 2.d4#
      • 1...Sg3
        • 2.Sxf3#

This anticipates 124409(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::B(E),XS(b)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(d);N_GUARD,P_SPINB(d)::QAR1(F),XB(d)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • B(E);
    • Threat
      • QAR2(F)
    • Vars
      • P(c);::QAR2(F),XQ(c)
      • P(c);::QAR2(F),XS(c)
      • P(c);::QAR2(F),XB(c)
      • P(c);::QAR2(F),XR(c)
      • B(d);SBLOCK::B(E)+P(B)
      • S(b);SBLOCK::B(E)+P(B)
      • S(b);S_CUTR(e)::S(C),XB(d)
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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).