MESON Chess Problem Database

Problem Display
PID: 39043 (8/8/8/8/8/8/1KBBkpQp/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

8/8/8/8/8/8/1KBBkpQp/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd2
      • 2.Qxf2#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qd3#
      • 1...f1Q
        • 2.Qe3#
      • 1...f1S
        • 2.Qg2#
      • 1...f1B
        • 2.Qe3#
      • 1...f1R
        • 2.Qe3#
      • 1...Kxd2!
    • 1.Qxh2?
      • 1...Kf1
        • 2.Bd3#
      • 1...Kxd2
        • 2.Qxf2#
      • 1...Kf3!
    • 1.Qg4+?
      • 1...Kf1
        • 2.Bd3#
      • 1...Kxd2!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd3#
      • 1...Kf1
        • 2.Bd3#
      • 1...Kxd2
        • 2.Qxf2#
      • 1...f1Q
        • 2.Qe3#
      • 1...f1S
        • 2.Qg2#
      • 1...f1B
        • 2.Qe3#
      • 1...f1R
        • 2.Qe3#

Anticipated by 1987(1868), 214530(1879), 231390(1927), 110540(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XB(C)::QAR2(D),XP(b)
  • Tries
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAB1(D)
      • Vars
        • P(b);SBLOCK::QAR1(D)
        • P(b);OGATEB::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(D);XP(c)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(B)
        • K(a);P-FLIGHT,XB(C)::QAR2(D),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(D);CHECK,N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
  • Actual
    • Q(D);N_PINP(b)
    • Threat
      • QAB1(D)
    • Vars
      • K(a);S_FLIGHT::B(B)
      • K(a);P-FLIGHT,XB(C)::QAR2(D),XP(b)
      • P(b);SBLOCK::QAR1(D)
      • P(b);OGATEB::QAR2(D)
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).