MESON Chess Problem Database

Problem Display
PID: 224594 (B7/8/3K2pp/3Q4/4Npkp/8/6P1/8 w - - 0 1)

Howitt, FJ

English Mechanic and World of Science, 1888

(First published on Fri Mar 9 1888)

B7/8/3K2pp/3Q4/4Npkp/8/6P1/8

#2

5 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Qe6#
      • 2.Qg5#
  • Tries
    • 1.Qb3?
      • 1...Kf5
        • 2.Qe6#
        • 2.Qh3#
      • 1...Kh5
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...h3
        • 2.Qxh3#
      • 1...h5
        • 2.Qe6#
        • 2.Qh3#
      • 1...g5!
    • 1.Qd1+?
      • 1...f3
        • 2.Qxf3#
      • 1...Kf5!
  • Keys
    • 1.Qd3!
      • 1...Kf5
        • 2.Qh3#
      • 1...Kh5
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...h3
        • 2.Qxh3#
      • 1...g5
        • 2.Sf6#
      • 1...h5
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB(C)
        • P(a);::QAB1(C),XP(a)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK
      • Vars
        • P(a);P_SPINP(a)::QAB1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • P(a);::QAB1(C),XP(a)
      • P(c);::QAB1(C),XP(c)
      • P(d);SBLOCK::S(B)
      • P(e);SBLOCK::QAB1(C)
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).