MESON Chess Problem Database

Problem Display
PID: 207125 (7r/3NP1r1/3k1P2/6N1/B1Pp4/8/3K4/Q7 w - - 0 1)

Brown, Theodore Morris

New York Clipper, 1866

7r/3NP1r1/3k1P2/6N1/B1Pp4/8/3K4/Q7

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.e8S#
    • 1...Rh3
      • 2.e8S#
    • 1...Rh4
      • 2.e8S#
    • 1...Rh5
      • 2.e8S#
    • 1...Rh6
      • 2.e8S#
    • 1...Rh7
      • 2.e8S#
    • 1...d3
      • 2.Qe5#
  • Tries
    • 1.c5+?
      • 1...Kd5
        • 2.Qa2#
      • 1...Kc7!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qc6#
      • 1...Rh2+
        • 2.Qxh2#
      • 1...Kc7
        • 2.Qc6#
      • 1...Rxh1
        • 2.e8S#
      • 1...Rc8
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD::P=S
    • P(a);OGATE::QAB1(A)
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(d);CHECK,N_GUARD::QAB(A),XR(d)
      • K(b);S_FLIGHT::QAR1(A)
      • R(d);N_GUARD,XQ(A)::P=S
      • R(d);N_GUARD::QAB(A)
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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).