MESON Chess Problem Database

Problem Display
PID: 169933 (5rB1/6Np/2pr1R1B/2b1k2n/3RN3/8/7K/6Q1 w - - 0 1)

Frei-Schuler, Gottlieb

Schweizerische Arbeiter Schachzeitung, 1945

5rB1/6Np/2pr1R1B/2b1k2n/3RN3/8/7K/6Q1

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re6#
    • 1...Re6
      • 2.Rxe6#
    • 1...Rd7
      • 2.Re6#
    • 1...Rdd8
      • 2.Re6#
    • 1...Ra8
      • 2.Rf5#
    • 1...Rb8
      • 2.Rf5#
    • 1...Rc8
      • 2.Rf5#
    • 1...Rfd8
      • 2.Rf5#
    • 1...Re8
      • 2.Rf5#
    • 1...Rxg8
      • 2.Rf5#
    • 1...Sg3
      • 2.Bf4#
    • 1...Sf4
      • 2.Bxf4#
    • 1...Sxg7
      • 2.Bf4#
  • Tries
    • 1.Rd5+?
      • 1...Kxe4
        • 2.Qb1#
        • 2.Qh1#
        • 2.Qg2#
      • 1...Rxd5
        • 2.Re6#
      • 1...cxd5!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sg4#
      • 1...Kxd4
        • 2.Qa1#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Rxd4
        • 2.Qg5#
      • 1...Bxd4
        • 2.Qg5#
      • 1...Sxf6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 13
  • Sets
    • R(e);N_GUARD::R1(E)
    • R(e);N_GUARD::R1(E),XR(e)
    • R(g);N_GUARD::R1(E)
    • R(g);N_GUARD,XB(H)::R1(E)
    • S(c);N_GUARD::B(F)
    • S(c);N_GUARD::B(F),XS(c)
    • S(c);N_GUARD,XS(G)::B(F)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • R(e);SBLOCK,XR(C)::R1(E)
      • Refutation
        • P(d);XR(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(C)::QAB(A)
      • K(b);S_FLIGHT,XR(E)::QAB1(A)
      • R(e);SBLOCK,XR(C)::QAR2(A)
      • B(a);SBLOCK,XR(C)::QAR2(A)
      • S(c);SBLOCK,XR(E)::S(D)
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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).