MESON Chess Problem Database

Problem Display
PID: 258918 (B1K2n2/6R1/p1Nk1pp1/2b5/4np2/2p3p1/Q4p2/4R2b w - - 0 1)

Dittrich, Stefan

Deutsche Schachzeitung, 1986

B1K2n2/6R1/p1Nk1pp1/2b5/4np2/2p3p1/Q4p2/4R2b

#2

6 + 12

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Rd7#
    • 1...Sd7
      • 2.Rxd7#
    • 1...Sh7
      • 2.Rd7#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Sg5
        • 2.Sc4#
      • 1...Sd2!
    • 1.Sd8?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Sd2
        • 2.Sf7#
      • 1...Sg5!
    • 1.Qe6+?
      • 1...Sxe6
        • 2.Rd7#
      • 1...Kxe6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Sd2
        • 2.Sf7#
      • 1...Sg5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(l);N_GUARD::R1(D)
    • S(l);N_GUARD::R1(D),XS(l)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(i);P_SPINS(e),S_FLIGHT::QAR1(B)
        • S(e);::S(C)
      • Refutation
        • S(e);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(i);P_SPINS(e),S_FLIGHT::QAR1(B)
        • S(e);::S(C)
      • Refutation
        • S(e);
    • Try
      • Q(B);CHECK
      • Vars
        • S(l);SBLOCK,XQ(B)::R1(D)
      • Refutation
        • K(i);P-FLIGHT,P_SPINS(e),XQ(B)
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(i);P_SPINS(e),S_FLIGHT,XS(C)::QAR1(B)
      • S(e);::S(C)
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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).