MESON Chess Problem Database

Problem Display
PID: 268039 (8/2p5/2Pp3K/5N2/8/N1pkp1Q1/1pR5/1nb4B w - - 0 1)

Sukhnev, Valery

The Problemist, 1999

8/2p5/2Pp3K/5N2/8/N1pkp1Q1/1pR5/1nb4B

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qxe3#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qe2#
        • 2.Qe4#
        • 2.Qd5#
      • 1...Sxa3
        • 2.Qe2#
        • 2.Qe4#
      • 1...Sd2
        • 2.Qxe3#
      • 1...d5
        • 2.Qe2#
        • 2.Qxd5#
      • 1...Bd2!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Be4#
        • 2.Qc4#
        • 2.Qd4#
        • 2.Qe4#
      • 1...Sxa3
        • 2.Qe4#
      • 1...Bd2
        • 2.Qc4#
      • 1...Sd2
        • 2.Qxe3#
      • 1...e2
        • 2.Be4#
      • 1...d5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);S_CUTB(b)::QAR1(D),XP(f)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);S_CUTB(b)::QAR1(D),XP(f)
      • Refutation
        • B(b);
  • Actual
    • Q(D);N_PINP(f)
    • Threat
      • DUALS(4)
    • Vars
      • S(a);XS(C)::QAB1(D)
      • B(b);::QAB1(D)
      • S(a);S_CUTB(b)::QAR1(D),XP(f)
      • P(f);P_PINQ(D)::B(A)
      • P(g);::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).