MESON Chess Problem Database

Problem Display
PID: 196733 (4K3/1P6/3NP3/1P2kPP1/3Nqp2/B1n1pB2/4P3/3Q4 w - - 0 1)

Nield, Joshua

L'Italia Scacchistica, 1919

4K3/1P6/3NP3/1P2kPP1/3Nqp2/B1n1pB2/4P3/3Q4

#2

12 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sc6#
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qc2
      • 2.Sc6#
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qd3
      • 2.Sc6#
    • 1...Qxf3
      • 2.Sxf3#
    • 1...Qd5
      • 2.Sf7#
    • 1...Qxf5
      • 2.Sc4#
    • 1...Qc6+
      • 2.Sxc6#
    • 1...Qxb7
      • 2.Sc4#
    • 1...Sd5
      • 2.Sc6#
      • 2.Sc4#
      • 2.Sf7#
  • Keys
    • 1.Qd3!
      • 1...Qc6+
        • 2.Sxc6#
      • 1...Kd5
        • 2.Sc6#
      • 1...Qxd3
        • 2.Sc6#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Qxf5
        • 2.Sc4#
      • 1...Qxb7
        • 2.Sc4#
      • 1...Qxd4
        • 2.Sf7#
      • 1...Sxe2
        • 2.Qxe4#
      • 1...Sxb5
        • 2.Qxe4#
      • 1...Qd5
        • 2.Sf7#
      • 1...Sb1
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sa2
        • 2.Qxe4#
      • 1...Sa4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Sc6#
        • 2.Sc4#
        • 2.Sf7#
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::S(E)
    • Q(c);XB(D)::S(E),XQ(c)
    • Q(c);::S(I)
    • Q(c);XP(G)::S(I)
    • Q(c);CHECK,N_GUARD::S(E),XQ(c)
    • Q(c);XP(K)::S(I)
  • Actual
    • Q(A);
    • Vars
      • Q(c);CHECK,N_GUARD::S(E),XQ(c)
      • K(e);P-FLIGHT,P_PINP(J),P_SPINQ(c)::QAR(A)+S(E)
      • Q(c);N_GUARD,XQ(A)::S(E)
      • Q(c);XB(D)::S(E),XQ(c)
      • Q(c);XP(G)::S(I)
      • Q(c);XP(K)::S(I)
      • Q(c);XS(E)::S(I)
      • S(a);N_GUARD,XP(B)::QAR1(A),XQ(c)
      • S(a);N_GUARD,XP(F)::QAR1(A),XQ(c)
      • Q(c);::S(I)
      • S(a);N_GUARD::QAR1(A),XQ(c)
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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).