MESON Chess Problem Database

Problem Display
PID: 79928 (8/Q7/8/1K6/4p3/2pk4/5R2/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Sovietskaya Kuban, 1961

8/Q7/8/1K6/4p3/2pk4/5R2/8

#2

3 + 3

3713 Snap 2008
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Re2?
      • threat
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...Kxe2!
    • 1.Qc5?
      • 1...e3
        • 2.Qc4#
        • 2.Qd5#
      • 1...c2!
  • Keys
    • 1.Kc5!
      • 1...Ke3
        • 2.Kc4#
      • 1...c2
        • 2.Qa3#
      • 1...e3
        • 2.Qh7#

Anticipated by 4502(1871)

This anticipates 133964(1963), 79166(1992)

FEATURES

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