MESON Chess Problem Database

Problem Display
PID: 2163 (1B6/2R2PN1/8/7P/2p1pk2/2Q1pN1P/8/1B5K w - - 0 1)

Carpenter, George Edward

Source?, 0000

1B6/2R2PN1/8/7P/2p1pk2/2Q1pN1P/8/1B5K

#2

10 + 4

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Rxc4#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Ra7#
      • 2.Rb7#
      • 2.Rd7#
      • 2.Re7#
      • 2.Rc8#
    • 1...exf3
      • 2.Rc5#
  • Tries
    • 1.Kh2?
      • threat
        • 2.Qf6#
        • 2.f8Q#
        • 2.f8R#
      • 1...exf3
        • 2.Se6#
        • 2.Rc5#
        • 2.Qf6#
      • 1...e2
        • 2.Rxc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Rc8#
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxf3!
    • 1.Qe1?
      • threat
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxf3
        • 2.f8Q#
        • 2.f8R#
      • 1...exf3
        • 2.Rc5#
      • 1...c3
        • 2.f8Q#
        • 2.f8R#
      • 1...e2!
  • Keys
    • 1.Sf5!
      • 1...Kxf3
        • 2.Qxe3#
      • 1...Kxf5
        • 2.Qe5#
      • 1...exf3
        • 2.Qxe3#
      • 1...e2
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK,XS(D)::B(J)+R(G)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(a),XS(D)
    • Try
      • Q(C);
      • Threat
        • P=Q
      • Vars
        • K(d);P-FLIGHT,XS(D)::P=Q
        • P(c);SBLOCK,XS(D)::B(J)+R(G)
        • P(b);::P=Q
      • Refutation
        • P(a);
  • Actual
    • S(I);
    • Vars
      • K(d);P-FLIGHT,P_SPINP(a),XS(D)::QAR1(C),XP(a)
      • K(d);P-FLIGHT,P_SPINP(c),XS(I)::QAR1(C)
      • P(c);XS(D)::QAB1(C),XP(a)
      • P(a);::B(J)+R(G)
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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).