MESON Chess Problem Database

Problem Display
PID: 103524 (8/K7/6B1/p3p3/2p1Q3/4NR2/r3kqp1/1N4R1 w - - 0 1)

Cristoffanini, Guido

BCF 001. Ty., 1929-1930

8/K7/6B1/p3p3/2p1Q3/4NR2/r3kqp1/1N4R1

#2

7 + 7

56 The Problemist 1930
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3+
      • 2.Qxe3#
    • 1...Qg3
      • 2.Sd1#
      • 2.Sc2#
      • 2.Sxg2#
      • 2.Sxc4#
      • 2.Sg4#
      • 2.Sd5#
      • 2.Sf5#
    • 1...Qh4
      • 2.Sg4#
    • 1...Rd2
      • 2.Sc3#
  • Keys
    • 1.Bh5!
      • threat
        • 2.Qxc4#
      • 1...Qxe3+
        • 2.Qxe3#
      • 1...Qxg1
        • 2.Rf1#
      • 1...Qxf3
        • 2.Sd1#
      • 1...Qf1
        • 2.Rfxf1#
      • 1...Qh4
        • 2.Sg4#
      • 1...Rc2
        • 2.Qxc2#
      • 1...Rd2
        • 2.Sc3#
      • 1...Ra3
        • 2.Qc2#
      • 1...Ra4
        • 2.Qc2#
      • 1...c3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::QAR1(E),XQ(c)
    • Q(c);N_PINS(C)::QAR(E)+S(C)
    • R(a);SBLOCK::S(A)
  • Actual
    • B(F);
    • Threat
      • QAB(E),XP(e)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(C)::QAR1(E),XQ(c)
      • Q(c);OGATE,XR(B)::B(F)+R(D)
      • Q(c);N_PINS(C),P_SPINQ(c),XR(D)::QAR(E)+S(C)
      • Q(c);N_PINS(C),OGATE::B(F)+R(D),XQ(c)
      • Q(c);N_PINS(C)::QAR(E)+S(C)
      • R(a);N_GUARD::QAR2(E),XR(a)
      • R(a);SBLOCK::S(A)
      • R(a);N_GUARD::QAR2(E)
      • P(e);::QAB(E)
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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).