MESON Chess Problem Database

Problem Display
PID: 263819 (3N4/7Q/q3Pp2/1pn5/1p1k1p2/1P3B2/2PK4/8 w - - 0 1)

Anonymous

Tijdschrift vd NSB, 1894

3N4/7Q/q3Pp2/1pn5/1p1k1p2/1P3B2/2PK4/8

#2

7 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sc6#
    • 1...Qa2
      • 2.Sc6#
    • 1...Qa3
      • 2.Sc6#
    • 1...Qa4
      • 2.Sc6#
    • 1...Qa5
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qa7
      • 2.Sc6#
    • 1...f5
      • 2.Qg7#
      • 2.Qh8#
  • Tries
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Sxd3!
    • 1.Qd7+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Qd6
        • 2.Sc6#
        • 2.Qxd6#
      • 1...Sxd7!
  • Keys
    • 1.Qa7!
      • 1...Ke5
        • 2.Qxc5#
      • 1...Qxe6
        • 2.Qa1#
      • 1...Qxa7
        • 2.Sc6#
      • 1...Qb7
        • 2.Qa1#
      • 1...Qc8
        • 2.Qa1#
      • 1...Qa1
        • 2.Sc6#
        • 2.Qxa1#
      • 1...Qa2
        • 2.Sc6#
      • 1...Qa3
        • 2.Sc6#
      • 1...Qa4
        • 2.Sc6#
      • 1...Qa5
        • 2.Sc6#
      • 1...Qb6
        • 2.Qa1#
      • 1...Qc6
        • 2.Sxc6#
        • 2.Qa1#
      • 1...Qd6
        • 2.Qa1#
      • 1...f5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD::S(G)
    • Q(f);N_GUARD,P_PINP(A)::S(G)
    • Q(f);N_GUARD::S(G),XQ(f)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • S(e);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • S(e);XQ(F)
  • Actual
    • Q(F);P_PINS(e)
    • Vars
      • K(b);N_GUARD,N_SPINS(e),S_FLIGHT::QAR2(F),XS(e)
      • Q(f);OGATE,XP(E)::QAB(F)
      • Q(f);N_GUARD,N_SPINS(e),XQ(F)::S(G)
      • Q(f);OGATE::QAB(F)
      • Q(f);N_GUARD,P_PINP(A)::S(G)
      • Q(f);N_GUARD::S(G)
      • Q(f);N_SPINS(e),OGATE::QAB(F)
      • P(g);OGATEB::QAB(F)
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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).