MESON Chess Problem Database

Problem Display
PID: 19475 (2K5/2N5/Q1BkN3/8/8/8/5B2/8 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Izbrannie Zadachi i Etyudi, 1957

2K5/2N5/Q1BkN3/8/8/8/5B2/8

#2

6 + 1

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
273 Mat Plus 1994
133 The Problemist Supplement 2008
3713 Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Be8+?
      • 1...Ke7
        • 2.Bh4#
      • 1...Ke5!
    • 1.Qe2?
      • 1...Kxc6
        • 2.Qa6#
      • 1...Ke7!
    • 1.Qc4?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qf4#
      • 1...Ke7!
    • 1.Qa1?
      • 1...Kxc6
        • 2.Qa6#
      • 1...Ke7!
    • 1.Qa3+?
      • 1...Kxc6
        • 2.Sd8#
        • 2.Qc5#
        • 2.Qa6#
      • 1...Ke5!
    • 1.Qa4?
      • 1...Ke5
        • 2.Qf4#
      • 1...Ke7!
    • 1.Qa5?
      • threat
        • 2.Qc5#
      • 1...Kxc6
        • 2.Qb6#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qa6#
      • 1...Ke7!
  • Keys
    • 1.Qf1!
      • 1...Ke5
        • 2.Bg3#
      • 1...Kxc6
        • 2.Qa6#
      • 1...Ke7
        • 2.Bc5#

This anticipates 158235(2015)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(B)
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).