MESON Chess Problem Database

Problem Display
PID: 229056 (4Nbq1/6r1/5B2/n2k1pr1/pP6/6p1/2Q5/1K2R3 w - - 0 1)

Filaretov, Sergei P

1st Comm., 64 Shakhmatnoe obozrenie, 1926

4Nbq1/6r1/5B2/n2k1pr1/pP6/6p1/2Q5/1K2R3

#2

6 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rd1#
    • 1...Re7
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Sc4
      • 2.Qg2#
    • 1...Sc6
      • 2.Qa2#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Re5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qg2#
      • 1...Qe6
        • 2.Rd1#
      • 1...Re7
        • 2.Qc5#
      • 1...Bd6
        • 2.Sf6#
      • 1...f4
        • 2.Qe4#
      • 1...Sc6!
  • Keys
    • 1.Ba1!
      • threat
        • 2.Re5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qg2#
      • 1...Qe6
        • 2.Rd1#
      • 1...Re7
        • 2.Qc5#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sc6
        • 2.Qa2#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(i);SBLOCK::R(B)
    • R(g);S_CUTB(h)::QAR1(C)
    • B(h);N_GUARD::QAR1(C),XB(h)
    • S(c);SBLOCK::QAB(C)
    • S(c);N_GUARD,SBLOCK::QAB(C)
    • P(e);N_GUARD::QAB1(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(B)
      • Vars
        • B(h);N_GUARD::QAR1(C),XB(h)
        • S(c);SBLOCK::QAB(C)
        • Q(i);SBLOCK::R(B)
        • R(g);S_CUTB(h)::QAR1(C)
        • B(h);SBLOCK::S(F)
        • P(e);N_GUARD::QAB1(C)
      • Refutation
        • S(c);
  • Actual
    • B(E);
    • Threat
      • R1(B)
    • Vars
      • B(h);N_GUARD::QAR1(C),XB(h)
      • S(c);SBLOCK::QAB(C)
      • Q(i);SBLOCK::R(B)
      • R(g);S_CUTB(h)::QAR1(C)
      • B(h);SBLOCK::S(F)
      • S(c);N_GUARD,SBLOCK::QAB(C)
      • P(e);N_GUARD::QAB1(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).