MESON Chess Problem Database

Problem Display
PID: 141651 (8/4p3/2p5/2Pk4/4NQ2/2K5/8/8 w - - 0 1)

Neyndorff, Luke

StrateGems, 2011

8/4p3/2p5/2Pk4/4NQ2/2K5/8/8

#2

4 + 3

3713 Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Kd3?
      • 1...e5
        • 2.Qf7#
      • 1...e6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Sg3?
      • 1...Ke6
        • 2.Qf5#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd6#
        • 2.Qd4#
      • 1...Kxc5!
    • 1.Sg5?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qc4#
      • 1...Kxc5!
    • 1.Sf6+?
      • 1...Kxc5
        • 2.Qb4#
      • 1...exf6
        • 2.Qf5#
      • 1...Ke6!
  • Keys
    • 1.Sd6!
      • 1...Kxc5
        • 2.Qd4#
      • 1...Ke6
        • 2.Qf5#
      • 1...exd6
        • 2.Qf5#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd4#

Anticipated by 79149(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(c);N_GUARD,SBLOCK::QAB(C)
        • P(c);N_GUARD::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAB1(C)
        • P(c);XS(B)::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAB1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • P(c);N_GUARD,XS(B)::QAR2(C)
      • P(c);SBLOCK::QAB1(C)
      • P(c);SBLOCK::QAR1(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).