MESON Chess Problem Database

Problem Display
PID: 47188 (8/8/p7/kpQ5/2n5/3R4/K7/8 w - - 0 1)

Kuligin, Nikolai Volodimirovich

3rd Prize, Pershoveresen, 1992

8/8/p7/kpQ5/2n5/3R4/K7/8

#2

3 + 4

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Ra3#
    • 1...Sa3
      • 2.Rxa3#
    • 1...Se3
      • 2.Ra3#
    • 1...Se5
      • 2.Ra3#
    • 1...Sd6
      • 2.Ra3#
  • Tries
    • 1.Kb3?
      • 1...Sb2
        • 2.Qc7#
      • 1...Sa3
        • 2.Qc7#
      • 1...Se3
        • 2.Qc7#
      • 1...Se5
        • 2.Qc7#
      • 1...Sb6
        • 2.Qb4#
      • 1...Sd6
        • 2.Qc7#
      • 1...Sd2+!
    • 1.Rb3?
      • 1...Ka4
        • 2.Qb4#
      • 1...Sd2
        • 2.Ra3#
      • 1...Sa3
        • 2.Rxa3#
      • 1...Se3
        • 2.Ra3#
      • 1...Se5
        • 2.Ra3#
      • 1...Sb6
        • 2.Qb4#
      • 1...Sd6
        • 2.Ra3#
      • 1...Sb2!
  • Keys
    • 1.Rd4!
      • 1...Ka4
        • 2.Qa3#
      • 1...Sb2
        • 2.Qc7#
      • 1...Sd2
        • 2.Qc7#
      • 1...Sa3
        • 2.Qc7#
      • 1...Se3
        • 2.Qc7#
      • 1...Se5
        • 2.Qc7#
      • 1...Sb6
        • 2.Qb4#
      • 1...Sd6
        • 2.Qc7#

Anticipated by 79937(1957)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(B)
    • S(a);N_GUARD::R(B),XS(a)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB(C)
        • S(a);SBLOCK::QAB1(C)
      • Refutation
        • S(a);CHECK
    • Try
      • R(B);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(C)
        • S(a);N_GUARD::R(B)
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);SBLOCK::QAB1(C)
      • Refutation
        • S(a);
  • Actual
    • R(B);
    • Vars
      • K(b);N_SPINP(c),P-FLIGHT,P_SPINS(a)::QAR1(C)
      • S(a);N_GUARD::QAB(C)
      • S(a);SBLOCK::QAB1(C)
HTML5 logo

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).