MESON Chess Problem Database

Problem Display
PID: 263318 (4N3/3p1p1B/6P1/1K1kpP2/3P4/3Q4/8/8 w - - 0 1)

Babiarz, Andrzej

Szachy, 1974

4N3/3p1p1B/6P1/1K1kpP2/3P4/3Q4/8/8

#2

7 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qc4#
    • 1...d6
      • 2.Sf6#
      • 2.Sc7#
    • 1...fxg6
      • 2.Bg8#
    • 1...f6
      • 2.Bg8#
  • Tries
    • 1.gxf7?
      • 1...e4
        • 2.Qc4#
      • 1...d6
        • 2.Sf6#
        • 2.Sc7#
      • 1...exd4!
    • 1.g7?
      • 1...e4
        • 2.Qc4#
      • 1...d6
        • 2.Sf6#
        • 2.Sc7#
      • 1...f6
        • 2.Bg8#
        • 2.g8Q#
        • 2.g8B#
      • 1...exd4!
  • Keys
    • 1.f6!
      • 1...Ke6
        • 2.d5#
      • 1...exd4
        • 2.Qf5#
      • 1...fxg6
        • 2.Bg8#
      • 1...e4
        • 2.Qc4#
      • 1...d6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::QAB1(A)
    • P(d);OGATEB,XP(E)::B(F)
    • P(d);OGATEB::B(F)
  • Tries
    • Try
      • P(E);XP(d)
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);P_SPINP(b),XP(B)
    • Try
      • P(E);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);P_SPINP(b),XP(B)
  • Actual
    • P(D);
    • Vars
      • K(a);OGATE,S_FLIGHT::P(B)
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XP(B)::QAR2(A)
      • P(d);OGATEB,XP(E)::B(F)
      • P(b);SBLOCK::QAB1(A)
      • P(c);SBLOCK::S(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).