MESON Chess Problem Database

Problem Display
PID: 274686 (7K/7p/3p4/3pk3/1n4Q1/2p2R2/2n3N1/1B6 w - - 0 1)

Mantta, Teppo

Meson, 2024

7K/7p/3p4/3pk3/1n4Q1/2p2R2/2n3N1/1B6

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qf5#
  • Tries
    • 1.Rf6?
      • threat
        • 2.Re6#
        • 2.Qf4#
      • 1...d4
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sd3
        • 2.Re6#
      • 1...Kxf6!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Sd3#
      • 1...Ke4
        • 2.Sd3#
        • 2.Sg6#
      • 1...Kf6
        • 2.Sg6#
      • 1...Sa1
        • 2.Qg7#
      • 1...Se1
        • 2.Qg7#
      • 1...Sa3
        • 2.Qg7#
      • 1...Se3
        • 2.Qg7#
      • 1...Sd4
        • 2.Qg7#
      • 1...Sa2
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa6
        • 2.Sd3#
      • 1...Sc6
        • 2.Sd3#
      • 1...d4
        • 2.Qe6#
      • 1...h5
        • 2.Sg6#
      • 1...h6
        • 2.Sg6#

This is a version of 158155

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR1(D)
  • Tries
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(D)
        • S(c);::R1(C)
      • Refutation
        • K(e);S_FLIGHT,XR(C)
  • Actual
    • S(B);
    • Vars
      • K(e);S_CUTS(c),S_FLIGHT::QAR(D)+S(B)
      • K(e);S_CUTP(g),S_FLIGHT::R(C)+S(B)
      • S(a);::QAB(D)
      • S(a);SBLOCK::QAB(D)
      • S(c);N_GUARD::S(B)
      • S(c);N_GUARD::S(B),XS(c)
      • P(d);SBLOCK::QAR1(D)
      • P(g);N_GUARD::S(B)
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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).