MESON Chess Problem Database

Problem Display
PID: 71894 (4Q3/K2n4/8/5p2/1RB2k2/5N1P/7P/nq3R2 w - - 0 1)

Savournin, Jacques

Comm., The Problemist, 1963

4Q3/K2n4/8/5p2/1RB2k2/5N1P/7P/nq3R2

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2+
      • 2.Bxa2#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qd1
      • 2.Bd3#
    • 1...Qxf1
      • 2.Be2#
    • 1...Qb3
      • 2.Bxb3#
    • 1...Sc5
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sb6
      • 2.Qe5#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
  • Keys
    • 1.Qe7!
      • threat
        • 2.Se1#
      • 1...Qa2+
        • 2.Bxa2#
      • 1...Qxf1
        • 2.Be2#
      • 1...Qe4
        • 2.Qg5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Qc2
        • 2.Sd2#
      • 1...Qd3
        • 2.Bxd3#
      • 1...Qd1
        • 2.Bd3#
      • 1...Qe1
        • 2.Sxe1#
      • 1...Qb2
        • 2.Sd2#
      • 1...Qb3
        • 2.Bxb3#
      • 1...Sf6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(b);CHECK,N_GUARD::R(E)+B(F),XQ(b)
    • Q(b);N_GUARD::R(E)+B(F),XQ(b)
    • Q(b);N_GUARD::R(E)+B(F)
    • Q(b);N_GUARD,XR(A)::R(E)+B(F)
    • S(e);N_GUARD::QAB1(H)
    • S(e);N_GUARD::QAB1(H),XS(e)
  • Actual
    • Q(H);
    • Threat
      • R(A)+S(C)
    • Vars
      • Q(b);CHECK,N_GUARD::R(E)+B(F),XQ(b)
      • Q(b);N_GUARD,XR(A)::R(E)+B(F)
      • Q(b);SBLOCK::QAB1(H)
      • S(e);N_GUARD::QAB1(H),XS(e)
      • Q(b);N_GUARD::R(A)+S(C)
      • Q(b);N_GUARD::R(E)+B(F),XQ(b)
      • Q(b);N_GUARD::R(E)+B(F)
      • Q(b);::R(A)+S(C),XQ(b)
      • S(e);N_GUARD::QAB1(H)
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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).