MESON Chess Problem Database

Problem Display
PID: 109354 (1B6/8/2Q5/r4P2/2Nk2K1/3p4/3P4/8 w - - 0 1)

Seneca, Camil

Bulletin de la FFE, 1930

1B6/8/2Q5/r4P2/2Nk2K1/3p4/3P4/8

#2

6 + 3

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Be5#
    • 1...Ra2
      • 2.Be5#
    • 1...Ra3
      • 2.Be5#
    • 1...Ra4
      • 2.Be5#
    • 1...Re5
      • 2.Bxe5#
    • 1...Ra6
      • 2.Be5#
    • 1...Ra7
      • 2.Be5#
      • 2.Bxa7#
    • 1...Ra8
      • 2.Be5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qc4#
      • 1...Ra4
        • 2.Qd5#
      • 1...Rc5!
    • 1.Sb6?
      • threat
        • 2.Qc4#
      • 1...Ra4
        • 2.Qd5#
      • 1...Rc5!
  • Keys
    • 1.Sd6!
      • 1...Ke5
        • 2.Sb5#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Rc5
        • 2.Qe4#
      • 1...Ra1
        • 2.Sb5#
      • 1...Ra2
        • 2.Sb5#
      • 1...Ra3
        • 2.Sb5#
      • 1...Ra4
        • 2.Sb5#
      • 1...Rb5
        • 2.Sxb5#
      • 1...Rd5
        • 2.Qc3#
      • 1...Re5
        • 2.Qc4#
      • 1...Ra6
        • 2.Sb5#
      • 1...Ra7
        • 2.Sb5#
      • 1...Ra8
        • 2.Sb5#

This anticipates 170111(1965)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::B(F)
    • R(c);N_GUARD::B(F),XR(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(E)
      • Vars
        • R(c);N_GUARD::QAR1(E)
      • Refutation
        • R(c);
    • Try
      • S(B);
      • Threat
        • QAR1(E)
      • Vars
        • R(c);N_GUARD::QAR1(E)
      • Refutation
        • R(c);
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::B(F)+S(B)
      • R(c);XP(D)::S(B),XR(c)
      • R(c);SBLOCK::QAR1(E)
      • R(c);N_GUARD::S(B)
      • R(c);N_GUARD::S(B),XR(c)
      • R(c);SBLOCK::QAB1(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).