MESON Chess Problem Database

Problem Display
PID: 223351 (8/1Q6/2Np4/3k2K1/1P6/3bp3/4N1P1/5R2 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1885

8/1Q6/2Np4/3k2K1/1P6/3bp3/4N1P1/5R2

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sa5#
    • 1...Ke4
      • 2.Sc3#
    • 1...Ke6
      • 2.Sf4#
      • 2.Qf7#
  • Tries
    • 1.Sc3+?
      • 1...Ke6
        • 2.Rf6#
        • 2.Qc8#
        • 2.Qe7#
        • 2.Qf7#
      • 1...Kc4!
    • 1.Sf4+?
      • 1...Ke4
        • 2.Qe7#
        • 2.Qh7#
      • 1...Kc4!
    • 1.Scd4+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke5!
    • 1.Rf5+?
      • 1...Kc4
        • 2.Sa5#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sg3#
        • 2.Qe7#
      • 1...Ke6
        • 2.Sed4#
        • 2.Sf4#
        • 2.Scd4#
        • 2.Sd8#
        • 2.Qc8#
        • 2.Qe7#
        • 2.Qf7#
      • 1...Bxf5!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Sg3#
        • 2.Rf4#
        • 2.Qe6#
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kxc6!
  • Keys
    • 1.Rd1!
      • 1...Kc4
        • 2.Sa5#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(F)
    • K(c);S_FLIGHT::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • B(a);XR(A)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(c);S_FLIGHT,XS(F)
  • Actual
    • R(A);P_PINB(a)
    • Vars
      • K(c);N_SPINB(a),S_FLIGHT::S(F)
      • K(c);N_SPINB(a),S_FLIGHT::S(B)
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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).