MESON Chess Problem Database

Problem Display
PID: 25715 (B4R2/4Rb1N/7n/4Pn2/4Pk1p/5p1K/3P4/2Q5 w - - 0 1)

Mirri, Giorgio

L'Italia Scacchistica, 1990

B4R2/4Rb1N/7n/4Pn2/4Pk1p/5p1K/3P4/2Q5

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.d3#
      • 2.d4#
    • 1...Bb3
      • 2.d3#
      • 2.d4#
    • 1...Bc4
      • 2.d3#
      • 2.d4#
    • 1...Bd5
      • 2.d3#
    • 1...Bh5
      • 2.d3#
      • 2.d4#
    • 1...Be6
      • 2.d4#
    • 1...Bg6
      • 2.d3#
      • 2.d4#
    • 1...Be8
      • 2.d3#
      • 2.d4#
    • 1...Bg8
      • 2.d3#
      • 2.d4#
    • 1...Se3
      • 2.dxe3#
    • 1...Sg3
      • 2.d3#
      • 2.d4#
    • 1...Sd4
      • 2.d3#
    • 1...Sd6
      • 2.d3#
      • 2.d4#
    • 1...Sxe7
      • 2.d4#
    • 1...Sg7
      • 2.d3#
      • 2.d4#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg5#
      • 1...Bd5
        • 2.Qe3#
      • 1...Be6
        • 2.Qh2#
      • 1...f2
        • 2.Qxf2#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sg3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(f);P_SPINS(d)::QAB(A)+P(B)
    • S(d);OGATE,P_SPINB(f)::P(B),XS(d)
    • S(d);N_GUARD,P_SPINB(f)::QAB(A)+P(B)
    • S(d);N_GUARD,P_SPINB(f),XR(F)::QAB(A)+P(B)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • B(f);P_SPINS(d)::QAB1(A)
      • B(f);P_SPINS(d)::QAB(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • S(e);N_GUARD::QAR1(A),XS(e)
      • S(d);N_GUARD,P_SPINB(f)::QAB1(A)
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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).