MESON Chess Problem Database

Problem Display
PID: 235150 (2KNN1R1/2p1k1p1/4p3/6P1/3Q4/4r3/b2q4/b7 w - - 0 1)

Cheylan, Yves

Problemas, 1975

2KNN1R1/2p1k1p1/4p3/6P1/3Q4/4r3/b2q4/b7

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Qd7#
    • 1...Qe1
      • 2.Qc5#
      • 2.Qd7#
    • 1...Qc3
      • 2.Qd7#
    • 1...Qb4
      • 2.Qd7#
    • 1...Qa5
      • 2.Qd7#
    • 1...Qb2
      • 2.Qc5#
      • 2.Qd7#
    • 1...Qc2
      • 2.Qd7#
    • 1...Qe2
      • 2.Qc5#
      • 2.Qd7#
    • 1...Qf2
      • 2.Qc5#
      • 2.Qd7#
    • 1...Qg2
      • 2.Qc5#
      • 2.Qd7#
    • 1...Qh2
      • 2.Qd7#
    • 1...Rc3
      • 2.Qxg7#
    • 1...Bd5
      • 2.Qc5#
  • Keys
    • 1.g6!
      • threat
        • 2.Sc6#
      • 1...Qc1
        • 2.Qd7#
      • 1...Qc3
        • 2.Qd7#
      • 1...Qc2
        • 2.Qd7#
      • 1...Qg2
        • 2.Qc5#
        • 2.Qd7#
      • 1...Rc3
        • 2.Qxg7#
      • 1...Bd5
        • 2.Qc5#
      • 1...e5
        • 2.Qh4#
      • 1...c6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::QAR1(A)
    • R(d);S_CUTB(a)::QAR2(A),XP(h)
    • B(b);S_CUTQ(c)::QAB(A)
  • Actual
    • P(B);
    • Threat
      • S(D)
    • Vars
      • Q(c);N_GUARD::QAR1(A)
      • R(d);S_CUTB(a)::QAR2(A),XP(h)
      • B(b);S_CUTQ(c)::QAB(A)
      • P(e);S_CUTB(a)::QAB(A)
      • P(f);::S(D),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).