MESON Chess Problem Database

Problem Display
PID: 23559 (6r1/4Q1pk/8/7p/6R1/6K1/8/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

6r1/4Q1pk/8/7p/6R1/6K1/8/8

#2

3 + 4

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxg7#
    • 1...Rb8
      • 2.Qxg7#
    • 1...Rc8
      • 2.Qxg7#
    • 1...Rd8
      • 2.Qxg7#
    • 1...Re8
      • 2.Qxg7#
    • 1...Rf8
      • 2.Qxg7#
    • 1...Rh8
      • 2.Qxg7#
    • 1...h4+
      • 2.Qxh4#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qxh5#
      • 1...h4+
        • 2.Rxh4#
        • 2.Qxh4#
      • 1...Kh8
        • 2.Qxh5#
      • 1...hxg4
        • 2.Qh5#
      • 1...Ra8
        • 2.Qxg7#
      • 1...Rb8
        • 2.Qxg7#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxg7#
      • 1...Rf8
        • 2.Qxg7#
      • 1...Rh8
        • 2.Qxg7#
      • 1...g6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxh5#
      • 1...h4+
        • 2.Rxh4#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kh8
        • 2.Qxh5#
      • 1...hxg4
        • 2.Qh5#
      • 1...Ra8
        • 2.Qxg7#
      • 1...Rb8
        • 2.Qxg7#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxg7#
      • 1...Rf8
        • 2.Qxg7#
      • 1...Rh8
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,SBLOCK::QAR1(C),XP(b)
    • R(d);N_GUARD::QAR1(C),XP(b)
    • P(a);CHECK,OGATEB::QAR(C),XP(a)
  • Tries
    • Try
      • Q(C);N_PINP(b)
      • Threat
        • QAR2(C),XP(a)
      • Vars
        • K(c);P-FLIGHT::QAR(C),XP(a)
        • P(a);XR(B)::QAR2(C)
        • R(d);N_GUARD,SBLOCK::QAR1(C),XP(b)
        • R(d);N_GUARD::QAR1(C),XP(b)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(a)
    • Vars
      • P(a);CHECK,OGATEB::R(B),XP(a)
      • K(c);N_SPINP(b),P-FLIGHT::QAR1(C)
      • K(c);N_SPINP(b),P-FLIGHT::QAR(C),XP(a)
      • P(a);XR(B)::QAR2(C)
      • R(d);N_GUARD,SBLOCK::QAR1(C),XP(b)
      • R(d);N_GUARD::QAR1(C),XP(b)
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).