MESON Chess Problem Database

Problem Display
PID: 204261 (8/8/8/3q4/B6B/8/1R6/K1kN4 w - - 0 1)

Kipping, Cyril Stanley

Chess Amateur (The), 1925

8/8/8/3q4/B6B/8/1R6/K1kN4

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Bg5#
    • 1...Qc6
      • 2.Bg5#
    • 1...Qb7
      • 2.Bg5#
    • 1...Qa8
      • 2.Bg5#
    • 1...Qd2
      • 2.Rb1#
    • 1...Qg5
      • 2.Bxg5#
  • Tries
    • 1.Bg5+?
      • 1...Qd2
        • 2.Bxd2#
        • 2.Rb1#
      • 1...Qxg5!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Se2#
        • 2.Rc2#
      • 1...Qa2+
        • 2.Sxa2#
      • 1...Qg2
        • 2.Sa2#
      • 1...Qb3
        • 2.Bg5#
      • 1...Qf3
        • 2.Sa2#
        • 2.Rc2#
      • 1...Qc4
        • 2.Rc2#
      • 1...Qe4
        • 2.Sa2#
      • 1...Qe6
        • 2.Rc2#
      • 1...Qd1
        • 2.Sa2#
      • 1...Qd2
        • 2.Sa2#
        • 2.Rb1#
      • 1...Qd3
        • 2.Sa2#
      • 1...Qb5
        • 2.Sa2#
        • 2.Rc2#
      • 1...Qe5
        • 2.Sa2#
        • 2.Rc2#
      • 1...Qf5
        • 2.Sa2#
        • 2.Se2#
      • 1...Qh5
        • 2.Sa2#
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::B(E)
    • Q(b);N_GUARD,P_PINB(D)::B(E)
    • Q(b);SBLOCK::R1(C)
    • Q(b);N_GUARD::B(E),XQ(b)
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • Q(b);XB(E)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK,N_GUARD::S(B),XQ(b)
      • Q(b);N_GUARD::S(B)
      • Q(b);N_GUARD::B(E)
      • Q(b);::R1(C)
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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).