MESON Chess Problem Database

Problem Display
PID: 120691 (8/1K2p3/1P1RPN2/p1k5/P1p1R3/4n3/8/3Q1n1b w - - 0 1)

Phelps, Francis Bradley

Ottawa Citizen, 1886

8/1K2p3/1P1RPN2/p1k5/P1p1R3/4n3/8/3Q1n1b

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Sd7#
      • 2.Rc6#
      • 2.Qd4#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Sd7#
        • 2.Rc6#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...exd6
        • 2.Sd7#
        • 2.Qxa5#
      • 1...exf6
        • 2.Rc6#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Rc6#
      • 1...Sxd2!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Rc6#
        • 2.Qa3#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...Kxd6
        • 2.Qa3#
      • 1...cxb3
        • 2.Rc6#
      • 1...exd6
        • 2.Qa3#
        • 2.Qb5#
      • 1...exf6
        • 2.Qa3#
      • 1...Sc2
        • 2.Rd5#
        • 2.Rc6#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);CHECK,XR(C)::S(G),XB(b)
        • P(g);XS(G)::R1(E)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(b);CHECK,XR(C)::S(G),XB(b)
      • K(f);S_FLIGHT,XR(E)::QAB(A)
      • P(d);XQ(A)::R1(E)
      • P(g);XS(G)::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).