MESON Chess Problem Database

Problem Display
PID: 566 (6B1/PQ6/4r3/2k5/3Rp3/n7/5B2/2b2K2 w - - 0 1)

Bartlett, Ira A

The Observer, 1965

6B1/PQ6/4r3/2k5/3Rp3/n7/5B2/2b2K2

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qd5#
    • 1...Rc6
      • 2.Qb4#
    • 1...Rd6
      • 2.Rc4#
    • 1...Sc4
      • 2.Rd5#
  • Tries
    • 1.Rxe4+?
      • 1...Kd6
        • 2.Rxe6#
      • 1...Be3!
  • Keys
    • 1.a8S!
      • threat
        • 2.Qd5#
      • 1...Re5
        • 2.Qb6#
      • 1...Rc6
        • 2.Qb4#
      • 1...Rd6
        • 2.Rc4#
      • 1...Sc4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(e);SBLOCK::QAR1(E)
    • R(e);SBLOCK::QAB1(E)
    • R(e);SBLOCK::B(B)+R(C),DCHECK
    • S(b);SBLOCK::B(B)+R(C),DCHECK
  • Tries
    • Try
      • R(C);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT::R1(C),XR(e)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • P(D);
    • Threat
      • QAR1(E)
    • Vars
      • R(e);N_GUARD::QAB1(E)
      • R(e);SBLOCK::QAB1(E)
      • R(e);SBLOCK::B(B)+R(C),DCHECK
      • S(b);SBLOCK::B(B)+R(C),DCHECK
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).