MESON Chess Problem Database

Problem Display
PID: 193774 (n6n/b1p2p2/1p3Q1B/2pkPK2/N6p/b2P1p2/2R1N3/3Rq3 w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1916

n6n/b1p2p2/1p3Q1B/2pkPK2/N6p/b2P1p2/2R1N3/3Rq3

#2

9 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Sac3#
    • 1...Qc3
      • 2.Saxc3#
    • 1...Qg3
      • 2.Sac3#
    • 1...Qxd1
      • 2.Sac3#
    • 1...Qf1
      • 2.Sac3#
    • 1...Qg1
      • 2.Sac3#
    • 1...Qh1
      • 2.Sac3#
    • 1...c4
      • 2.dxc4#
    • 1...c6
      • 2.Qd8#
      • 2.Qd6#
  • Tries
    • 1.Sec3+?
      • 1...Kd4
        • 2.Qd8#
      • 1...Qxc3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qd8#
      • 1...Qe4+
        • 2.dxe4#
      • 1...Qxe5+
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qd8#
      • 1...cxd4
        • 2.Qc6#
      • 1...c4
        • 2.dxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::S(E)
    • Q(a);N_GUARD::S(E),XQ(a)
    • Q(a);N_GUARD,XR(A)::S(E)
    • P(e);OGATE::R(A)+P(D)DCHECK,XP(e)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR(H)
      • Refutation
        • Q(a);XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR(H)
    • Vars
      • Q(a);CHECK,OGATE::P(D),XQ(a)
      • Q(a);CHECK,OGATE,XP(F)::QAR1(H),XQ(a)
      • K(f);P-FLIGHT,XS(C)::QAR(H)
      • P(e);SBLOCK,XS(C)::QAB1(H)
      • P(e);OGATE::P(D),XP(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).