MESON Chess Problem Database

Problem Display
PID: 234669 (K7/3pQ2R/2k5/8/P6B/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2009

K7/3pQ2R/2k5/8/P6B/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Qc5#
    • 1...d5
      • 2.Rh6#
      • 2.Qc7#
  • Tries
    • 1.Bf2?
      • threat
        • 2.Qc5#
        • 2.Qxd7#
      • 1...Kc7
        • 2.Qxd7#
      • 1...d5
        • 2.Rh6#
        • 2.Qc5#
        • 2.Qf6#
        • 2.Qe6#
        • 2.Qc7#
        • 2.Qd7#
      • 1...d6
        • 2.Qb7#
      • 1...Kd5!
    • 1.Rh6+?
      • 1...Kc7
        • 2.Qc5#
        • 2.Qd8#
      • 1...d6
        • 2.Qxd6#
      • 1...Kd5!
    • 1.Qe5?
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qb5#
      • 1...Kb6!
    • 1.Qxd7+?
      • 1...Kb6
        • 2.Qb5#
      • 1...Kc5!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Qc5#
      • 1...Kb6
        • 2.Qd6#
      • 1...Kc7
        • 2.Qc5#
      • 1...d5
        • 2.Rh6#
      • 1...d6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(C),XP(b)
        • P(b);OGATE,SBLOCK::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAR1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
      • P(b);N_GUARD,SBLOCK::R(D)
      • P(b);OGATE,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).