MESON Chess Problem Database

Problem Display
PID: 184769 (3K4/8/3kp3/6P1/P7/2P5/4P3/6BQ w - - 0 1)

Duverge, Josef FA

Norsk Sjakkblad, 1908

3K4/8/3kp3/6P1/P7/2P5/4P3/6BQ

#2

7 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Ke5
        • 2.Bh2#
      • 1...e5!
    • 1.Qb7?
      • 1...e5
        • 2.Qd7#
      • 1...Ke5!
    • 1.c4?
      • 1...e5
        • 2.Qd5#
        • 2.Qh6#
      • 1...Ke5!
  • Keys
    • 1.e4!
      • 1...Ke5
        • 2.Bh2#
      • 1...Kc6
        • 2.e5#
      • 1...e5
        • 2.Qh6#

This anticipates 121453(1912)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);P-FLIGHT::QAB(B)+P(C)
      • P(b);OGATEB,SBLOCK::QAR(B)
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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).