MESON Chess Problem Database

Problem Display
PID: 231227 (8/8/8/n3p2r/3N2p1/3Nk3/2P4P/Q3K2B w - - 0 1)

Henrik, ?

Torngren, Pehr Hendrik

Schackvarlden, 1927

8/8/8/n3p2r/3N2p1/3Nk3/2P4P/Q3K2B

#2

7 + 5

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Sf5#
    • 1...Rh3
      • 2.Sf5#
    • 1...Rh4
      • 2.Sf5#
    • 1...Rf5
      • 2.Sxf5#
    • 1...Rh6
      • 2.Sf5#
    • 1...Rh7
      • 2.Sf5#
    • 1...Rh8
      • 2.Sf5#
    • 1...exd4
      • 2.Qc1#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sd5#
      • 1...Kf4
        • 2.Qc1#
      • 1...exd4
        • 2.Qc1#
      • 1...e4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sd5#
      • 1...Kxf4
        • 2.Qc1#
      • 1...exd4
        • 2.Qc1#
      • 1...exf4
        • 2.Qc3#
      • 1...e4
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(e);N_GUARD,XP(E)::S(G)
    • R(e);N_GUARD::S(G)
    • R(e);N_GUARD::S(G),XR(e)
    • P(d);SBLOCK,XS(G)::QAB(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • P(d);SBLOCK,XS(G)::QAB(A)
      • Refutation
        • P(d);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(a);S_FLIGHT,XS(F)::QAB(A)
      • P(d);SBLOCK,XS(G)::QAB(A)
      • P(d);SBLOCK,XS(F)::QAR2(A)
      • P(d);SBLOCK::S(F)
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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).