MESON Chess Problem Database

Problem Display
PID: 184839 (n3K3/2p5/1p3p2/n2kPP2/P6Q/2RN2p1/2P3P1/8 w - - 0 1)

Jewetsky, Feodor Orestovich

125 Shakhmaty Zadachi (Eventski), 1908

n3K3/2p5/1p3p2/n2kPP2/P6Q/2RN2p1/2P3P1/8

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc6
      • 2.Qc4#
    • 1...Sb7
      • 2.Qc4#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Sb4#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qc4#
      • 1...c5!
  • Keys
    • 1.Rc6!
      • 1...Kxc6
        • 2.Qe4#
      • 1...Sxc6
        • 2.c4#
      • 1...fxe5
        • 2.Sb4#
      • 1...Sb3
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb7
        • 2.Qc4#
      • 1...b5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(F)
    • S(b);N_GUARD::QAB1(F),XS(b)
    • P(d);N_GUARD::R1(C)
  • Tries
    • Try
      • Q(F);
      • Threat
        • S(D)
      • Vars
        • P(e);OGATE,XP(G)::QAR1(F),XP(e)
        • S(b);N_GUARD::QAB1(F),XS(b)
        • S(b);N_GUARD::QAB1(F)
      • Refutation
        • P(f);
  • Actual
    • R(C);
    • Vars
      • K(c);S_FLIGHT,XR(C)::QAB(F)
      • S(b);N_GUARD,SBLOCK,XR(C)::P(A)
      • P(e);SBLOCK,XP(G)::S(D)
      • S(b);N_GUARD::QAB1(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • P(d);N_GUARD::R1(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).