MESON Chess Problem Database

Problem Display
PID: 184851 (1n2r3/2p3b1/2p2p2/KNp4Q/4k1N1/6Pp/2nP1pq1/5B2 w - - 0 1)

Jewetsky, Feodor Orestovich

125 Shakhmaty Zadachi (Eventski), 1908

1n2r3/2p3b1/2p2p2/KNp4Q/4k1N1/6Pp/2nP1pq1/5B2

#2

7 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sxf2#
    • 1...Bh6
      • 2.Sxf6#
    • 1...Bf8
      • 2.Sxf6#
  • Tries
    • 1.Bxg2+?
      • 1...hxg2
        • 2.Sxf2#
      • 1...Kd3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qf5#
      • 1...Sxe3
        • 2.d3#
      • 1...cxb5
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#
      • 1...Qf3
        • 2.Qxe8#
      • 1...Re5
        • 2.Qg4#
      • 1...Sd4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::S(D),XP(b)
    • B(j);N_GUARD::S(D),XP(h)
  • Tries
    • Try
      • B(A);CHECK,XQ(c)
      • Vars
        • P(d);XB(A)::S(D),XP(b)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • QAB1(G)
    • Vars
      • S(a);SBLOCK,XS(D)::P(B)
      • P(g);N_GUARD,XS(F)::QAB1(G)
      • P(h);::QAB1(G),XP(h)
      • Q(c);SBLOCK::QAR(G),XR(l)
      • R(l);SBLOCK::QAR2(G)
      • S(a);SBLOCK::S(F)
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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).