MESON Chess Problem Database

Problem Display
PID: 69391 (1b2K3/p7/P2k4/2nPp3/3NP3/n7/7Q/8 w - - 0 1)

van Beek, J

Tijdschrift vd NSB, 1897

1b2K3/p7/P2k4/2nPp3/3NP3/n7/7Q/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bc7
      • 2.Sf5#
    • 1...Sb1
      • 2.Sb5#
    • 1...Sc2
      • 2.Sb5#
    • 1...Sc4
      • 2.Sb5#
    • 1...Sb5
      • 2.Sxb5#
  • Tries
    • 1.Qh6+?
      • 1...Kc7
        • 2.Qc6#
      • 1...Se6!
  • Keys
    • 1.Qc2!
      • 1...Kc7
        • 2.Qxc5#
      • 1...Sxc2
        • 2.Sb5#
      • 1...Sxe4
        • 2.Qc6#
      • 1...Sxa6
        • 2.Sf5#
        • 2.Qc6#
      • 1...exd4
        • 2.Qh2#
      • 1...Bc7
        • 2.Sf5#
      • 1...Sb1
        • 2.Sb5#
      • 1...Sc4
        • 2.Sb5#
      • 1...Sb5
        • 2.Sxb5#
      • 1...Sb3
        • 2.Sf5#
        • 2.Qc6#
      • 1...Sd3
        • 2.Sf5#
        • 2.Qc6#
      • 1...Sa4
        • 2.Sf5#
        • 2.Qc6#
      • 1...Se6
        • 2.Sf5#
        • 2.Qc6#
      • 1...Sb7
        • 2.Sf5#
        • 2.Qc6#
      • 1...Sd7
        • 2.Sf5#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::S(B)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • Q(A);CHECK,N_PINP(c)
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(A);N_PINP(c)
    • Vars
      • K(d);P_SPINS(b),S_FLIGHT::QAR2(A),XS(b)
      • S(a);N_GUARD,XQ(A)::S(B)
      • S(b);OGATE,XP(C)::QAR1(A)
      • P(c);OGATEB,XS(B)::QAB(A)
      • B(f);SBLOCK::S(B)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(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).