MESON Chess Problem Database

Problem Display
PID: 262370 (8/3N3p/6k1/5Rp1/4Q3/3K4/8/8 w - - 0 1)

Innocenti, Didier

Europe Echecs, 1991

8/3N3p/6k1/5Rp1/4Q3/3K4/8/8

#2

4 + 3

5454 Near Snap 2022
6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rf7+?
      • 1...Kh5
        • 2.Rxh7#
      • 1...Kh6
        • 2.Rxh7#
        • 2.Qxh7#
      • 1...Kxf7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxg5#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Qxg5#
      • 1...Kh6
        • 2.Qxg5#
      • 1...g4
        • 2.Qg5#
        • 2.Qf6#
      • 1...h5
        • 2.Rf6#
      • 1...h6
        • 2.Qf7#

This anticipates 22724(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::R(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(a)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(B),XP(a)
      • K(b);P-FLIGHT::QAB1(B),XP(a)
      • P(c);SBLOCK::R1(C)
      • P(c);SBLOCK::QAB1(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).