MESON Chess Problem Database

Problem Display
PID: 219028 (7R/6QP/2B1pnn1/4Np2/2p1pk2/2P5/5PR1/K7 w - - 0 1)

Klark, Dmitry Vasilevich

Le Monde Illustre, 1882

7R/6QP/2B1pnn1/4Np2/2p1pk2/2P5/5PR1/K7

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qc7#
    • 1...Sh4
      • 2.Qg3#
    • 1...Sxe5
      • 2.Qg3#
    • 1...Se7
      • 2.Qg3#
    • 1...Sf8
      • 2.Qg3#
    • 1...Sxh8
      • 2.Qg3#
    • 1...e3
      • 2.Sxg6#
  • Tries
    • 1.Rg4+?
      • 1...Kxe5
        • 2.Qc7#
      • 1...fxg4
        • 2.Qxf6#
      • 1...Sxg4!
  • Keys
    • 1.Rf8!
      • 1...Kxe5
        • 2.Qc7#
      • 1...Sxh7
        • 2.Rg4#
      • 1...Sxe5
        • 2.Qg3#
      • 1...Sxf8
        • 2.Qg3#
      • 1...Sg4
        • 2.Rxg4#
      • 1...Sd5
        • 2.Rg4#
      • 1...Sh5
        • 2.Rg4#
      • 1...Sd7
        • 2.Rg4#
      • 1...Se8
        • 2.Rg4#
      • 1...Sg8
        • 2.Rg4#
      • 1...Sh4
        • 2.Qg3#
      • 1...Se7
        • 2.Qg3#
      • 1...Sh8
        • 2.Qg3#
      • 1...e3
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P_SPINS(f),S_FLIGHT,XS(E)::QAB(G)
    • S(g);OGATE::QAB1(G)
    • S(g);OGATE,SBLOCK,XS(E)::QAB1(G)
    • S(g);OGATE,XR(I)::QAB1(G)
    • P(b);::S(E),XS(g)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(c);P_SPINS(f),S_FLIGHT,XS(E)::QAB(G)
        • P(d);XR(C)::QAR2(G),XS(f)
      • Refutation
        • S(f);XR(C)
  • Actual
    • R(I);
    • Vars
      • K(c);OGATEB,P_SPINS(f),S_FLIGHT,XS(E)::QAB(G)
      • S(f);N_GUARD,P_SPINP(d),XP(H)::R1(C)
      • S(g);OGATE,SBLOCK,XS(E)::QAB1(G)
      • S(g);OGATE,XR(I)::QAB1(G)
      • S(f);N_GUARD,P_SPINP(d)::R1(C),XS(f)
      • S(f);N_GUARD,P_SPINP(d)::R1(C)
      • S(g);OGATE::QAB1(G)
      • P(b);::S(E),XS(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).