MESON Chess Problem Database

Problem Display
PID: 96725 (2K5/3p4/2pkp1Nn/7r/1P2R1n1/2B2N1r/B5b1/5Q2 w - - 0 1)

Strerath, Otto

Problem (Zagreb), 1951

2K5/3p4/2pkp1Nn/7r/1P2R1n1/2B2N1r/B5b1/5Q2

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Rd4#
      • 2.Qd3#
      • 2.Qd1#
    • 1...Se5
      • 2.Rd4#
    • 1...c5
      • 2.Qa6#
    • 1...e5
      • 2.Qd3#
      • 2.Qd1#
  • Tries
    • 1.Be5+?
      • 1...Sxe5
        • 2.Rd4#
      • 1...Rxe5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qf8#
      • 1...Bxf1
        • 2.Rd4#
      • 1...c5
        • 2.Qa6#
      • 1...Rf3
        • 2.Rd4#
      • 1...Bf3
        • 2.Qd3#
      • 1...Sf2
        • 2.Be5#
      • 1...Sf6
        • 2.Be5#
      • 1...Sf5
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sg8
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • S(c);S_CUTR(d)::R(F)
    • P(e);OGATEB::QAR(A)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • S(c);XB(C)::R(F)
      • Refutation
        • R(d);XB(C)
  • Actual
    • S(D);
    • Threat
      • QAB(A)
    • Vars
      • B(a);N_GUARD,XQ(A)::R(F)
      • P(e);OGATEB::QAR(A)
      • R(b);S_CUTB(a)::R(F)
      • B(a);S_CUTR(b)::QAR(A)
      • S(c);N_GUARD::B(C)
      • S(h);N_GUARD::S(D)
      • S(h);N_GUARD::S(D),XS(h)
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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).