MESON Chess Problem Database

Problem Display
PID: 172439 (8/8/r1N1p3/8/5k1K/2PQ4/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/r1N1p3/8/5k1K/2PQ4/8/8

#2

4 + 3

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Kf5
        • 2.Se7#
      • 1...Kf3!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sg6#
      • 1...Ke5
        • 2.Qd4#
      • 1...e5
        • 2.Sd5#

Anticipated by 79845(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • P(c);N_GUARD,SBLOCK::S(D)
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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).