MESON Chess Problem Database

Problem Display
PID: 249166 (3r4/7N/4Q3/r7/RB1bNk2/4p2P/4P2K/7b w - - 0 1)

de Blasio, Francis JC

Palestine Post, 1947

3r4/7N/4Q3/r7/RB1bNk2/4p2P/4P2K/7b

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qg4#
    • 1...Be5
      • 2.Qg4#
  • Tries
    • 1.Bd6+?
      • 1...Re5
        • 2.Qg4#
      • 1...Be5
        • 2.Qg4#
        • 2.Qf7#
        • 2.Qf6#
      • 1...Rxd6!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sd3#
      • 1...exf2
        • 2.Bd2#
      • 1...Re5
        • 2.Qg4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Ba1
        • 2.Bd6#
      • 1...Bb2
        • 2.Bd6#
      • 1...Bc3
        • 2.Bd6#
      • 1...Bc5
        • 2.Qf6#
      • 1...Be5
        • 2.Qg4#
      • 1...Bb6
        • 2.Bd6#
      • 1...Bf6
        • 2.Bd6#
      • 1...Ba7
        • 2.Bd6#
      • 1...Bg7
        • 2.Bd6#
      • 1...Bh8
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK::QAR1(G)
    • B(c);SBLOCK::QAR1(G)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • R(e);P_SPINR(e)::QAR1(G)
      • Refutation
        • R(f);XB(E)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • P(b);OGATEB,XS(F)::B(E)
      • R(e);SBLOCK::QAR1(G)
      • B(a);N_GUARD::QAR1(G),XB(a)
      • B(c);::R(D)+B(E),DCHECK
      • B(c);N_GUARD,S_CUTR(e)::QAR2(G)
      • B(c);SBLOCK::QAR1(G)
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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).