MESON Chess Problem Database

Problem Display
PID: 223153 (5N2/1P6/B5P1/1p1kB3/N1n1pP2/8/6Q1/K7 w - - 0 1)

Tinney, William E

Philadelphia Times, 1885

5N2/1P6/B5P1/1p1kB3/N1n1pP2/8/6Q1/K7

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxe4#
  • Tries
    • 1.Qa2?
      • 1...bxa4
        • 2.Qxc4#
      • 1...e3
        • 2.Qg2#
      • 1...b4
        • 2.Qxc4#
      • 1...Kc6!
    • 1.Qd2+?
      • 1...Kc6
        • 2.Qd7#
        • 2.b8S#
      • 1...Sxd2!
  • Keys
    • 1.Qc2!
      • 1...Kc6
        • 2.Qxe4#
      • 1...Sxe5
        • 2.Qc5#
      • 1...bxa4
        • 2.Qxc4#
      • 1...Sb2
        • 2.Sb6#
        • 2.Qc5#
      • 1...Sd2
        • 2.Sb6#
        • 2.Qc5#
      • 1...Sa3
        • 2.Sb6#
        • 2.Qc5#
      • 1...Se3
        • 2.Sb6#
        • 2.Qc5#
      • 1...Sa5
        • 2.Sb6#
        • 2.Qc5#
      • 1...Sb6
        • 2.Sxb6#
        • 2.Qc5#
      • 1...Sd6
        • 2.Sb6#
        • 2.Qc5#
      • 1...e3
        • 2.Qg2#
      • 1...b4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB(B),XP(b)
  • Tries
    • Try
      • Q(B);N_PINP(b),P_PINS(a)
      • Vars
        • P(c);N_GUARD,XS(C)::QAB1(B),XS(a)
        • P(b);OGATEB::QAB(B)
        • P(c);N_GUARD::QAB1(B),XS(a)
      • Refutation
        • K(d);N_SPINS(a),S_FLIGHT
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);N_PINP(b)
    • Vars
      • K(d);P_SPINS(a),S_FLIGHT::QAB(B),XP(b)
      • S(a);OGATE,XB(E)::QAR1(B)
      • P(c);N_GUARD,XS(C)::QAB1(B),XS(a)
      • P(b);OGATEB::QAB(B)
      • P(c);N_GUARD::QAB1(B),XS(a)
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).