MESON Chess Problem Database

Problem Display
PID: 172347 (8/8/4Q3/R3p1kr/4K1N1/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/8/4Q3/R3p1kr/4K1N1/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Rxe5#
      • 2.Qf5#
  • Tries
    • 1.Qe7+?
      • 1...Kg6
        • 2.Ra6#
      • 1...Kxg4!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sf3#
      • 1...Rh4+
        • 2.Sg4#
      • 1...Kh4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::R(C)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XS(B)
  • Actual
    • S(B);XP(a)
    • Threat
      • R(C)+S(B),DCHECK
    • Vars
      • R(c);CHECK,SBLOCK::R(C)+S(B)
      • K(b);S_FLIGHT::QAR1(D)
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).