MESON Chess Problem Database

Problem Display
PID: 184857 (3q1r2/6B1/1p1p1Pp1/3pk2b/3N4/2QP1nP1/1K3P2/8 w - - 0 1)

Jewetsky, Feodor Orestovich

125 Shakhmaty Zadachi (Eventski), 1908

3q1r2/6B1/1p1p1Pp1/3pk2b/3N4/2QP1nP1/1K3P2/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.f7#
    • 1...Qd7
      • 2.f7#
    • 1...Qa8
      • 2.f7#
    • 1...Qb8
      • 2.f7#
    • 1...Qc8
      • 2.f7#
    • 1...Qe8
      • 2.f7#
    • 1...Se1
      • 2.f4#
    • 1...Sg1
      • 2.f4#
    • 1...Sd2
      • 2.f4#
    • 1...Sh2
      • 2.f4#
    • 1...Sh4
      • 2.f4#
    • 1...Sg5
      • 2.f4#
  • Tries
    • 1.Qe1+?
      • 1...Kxd4
        • 2.Qc3#
        • 2.Qe3#
      • 1...Sxe1!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxc8
        • 2.f7#
      • 1...Sxd4
        • 2.f4#
      • 1...Qc7
        • 2.f7#
      • 1...Qd7
        • 2.f7#
      • 1...Qe8
        • 2.f7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD::B(H)+P(G)
    • S(a);OGATE::P(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • Q(h);N_GUARD,XQ(C)::B(H)+P(G)
      • S(a);OGATE,SBLOCK,XS(F)::P(B)
      • Q(h);N_GUARD::B(H)+P(G)
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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).