MESON Chess Problem Database

Problem Display
PID: 168921 (3N4/3p4/3p4/1p1k1p2/1K1PnB2/3Q1np1/8/7B w - - 0 1)

Zamanov, Vidadi

SuperProblem, 2014

3N4/3p4/3p4/1p1k1p2/1K1PnB2/3Q1np1/8/7B

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.dxe5#
    • 1...Sc5
      • 2.dxc5#
  • Tries
    • 1.Qxb5+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Sc5!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qb3#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Sfd2
        • 2.Qxb5#
      • 1...Se5
        • 2.Qxb5#
      • 1...Sed2
        • 2.Qxf5#
      • 1...Sf2
        • 2.Qxf5#
      • 1...Sc3
        • 2.Qxf5#
      • 1...Sc5
        • 2.Qxf5#
      • 1...Seg5
        • 2.Qxf5#
      • 1...Sf6
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,P_SPINS(c)::QAR(B)+P(D),XS(a)
    • S(c);OGATE,P_SPINS(a)::QAR(B)+P(D),XS(c)
  • Tries
    • Try
      • Q(B);CHECK,XP(d)
      • Vars
        • K(e);P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • S(c);P_SPINS(a)
  • Actual
    • B(E);
    • Threat
      • QAB(B)
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(D)::QAR1(B),XS(a)
      • S(a);P_SPINS(c)::QAR2(B),XP(d)
      • S(c);OGATE,P_SPINS(a)::QAR2(B),XP(f)
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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).