MESON Chess Problem Database

Problem Display
PID: 224721 (4B3/8/2r5/1Npk4/5PN1/5K2/8/7Q w - - 0 1)

von Hoene, HH

The Sunny South, 1888

4B3/8/2r5/1Npk4/5PN1/5K2/8/7Q

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Kf2+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Ke3+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Kg3+?
      • 1...Ke6
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qd1+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Kc4!
    • 1.Qh5+?
      • 1...Ke6
        • 2.Qf7#
        • 2.Qe5#
      • 1...Kc4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Se3#
      • 1...Ke6
        • 2.Qe4#
      • 1...Re6
        • 2.Qd3#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);CHECK,S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);CHECK,P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);CHECK,P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);CHECK,P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);S_FLIGHT::S(D)
      • K(b);S_FLIGHT::QAR2(A)
      • R(c);SBLOCK::QAR2(A)
      • P(a);SBLOCK::QAR2(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).