MESON Chess Problem Database

Problem Display
PID: 189842 (nK6/rNp5/kq2Q3/8/P1N5/n7/8/7B w - - 0 1)

Klucsik, Istvan

Magyar Sakkvilag, 1912

nK6/rNp5/kq2Q3/8/P1N5/n7/8/7B

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Sc5#
    • 1...Qd6
      • 2.Sc5#
    • 1...Qxe6
      • 2.Sc5#
    • 1...Rxb7+
      • 2.Bxb7#
  • Tries
    • 1.Qxb6+?
      • 1...Sxb6
        • 2.Sc5#
      • 1...cxb6!
  • Keys
    • 1.Bc6!
      • 1...Qxb7+
        • 2.Bxb7#
      • 1...Rxb7+
        • 2.Bxb7#
      • 1...Qxc6
        • 2.Sc5#
      • 1...Sxc4
        • 2.Bb5#
      • 1...Sb1
        • 2.Bb5#
      • 1...Qg1
        • 2.Bb5#
      • 1...Qf2
        • 2.Bb5#
      • 1...Qe3
        • 2.Bb5#
      • 1...Qd4
        • 2.Bb5#
      • 1...Qa5
        • 2.Bb5#
      • 1...Qc5
        • 2.Sxc5#
        • 2.Bb5#
      • 1...Qb1
        • 2.Bb5#
      • 1...Qb2
        • 2.Bb5#
      • 1...Qb3
        • 2.Bb5#
      • 1...Qb4
        • 2.Bb5#
      • 1...Qb5
        • 2.Bxb5#
      • 1...Sc2
        • 2.Bb5#
      • 1...Sb5
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_PINS(E)::S(E)
    • Q(c);N_PINS(E),N_SPINQ(c),XQ(D)::S(E)
    • R(d);CHECK,OGATE,XS(E)::B(A),XR(d)
  • Tries
    • Try
      • Q(D);CHECK,N_SPINS(E),XQ(c)
      • Vars
        • S(f);XQ(D)::S(E)
      • Refutation
        • P(e);XQ(D)
  • Actual
    • B(A);N_PINQ(c)
    • Vars
      • Q(c);CHECK,OGATE,XS(E)::QAR(D)+B(A),DCHECK,XQ(c)
      • R(d);CHECK,OGATE,XS(E)::B(A),XR(d)
      • Q(c);N_PINS(E),P_SPINQ(c),XB(A)::S(E)
      • S(a);N_GUARD,XS(C)::B(A)
      • S(a);N_GUARD::B(A)
      • Q(c);N_PINS(E)::QAR(D)+B(A),DCHECK
      • Q(c);::QAR(D)+B(A),DCHECK
      • Q(c);::QAR(D)+B(A),DCHECK,XQ(c)
      • S(a);N_GUARD::B(A),XS(a)
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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).