MESON Chess Problem Database

Problem Display
PID: 223258 (3B4/3R1p2/1P2p3/1Q1pk3/4pp1N/2P1n3/2pP4/2K5 w - - 0 1)

Taverner, Thomas

English Mechanic and World of Science, 1885

(First published on Fri Aug 21 1885)

3B4/3R1p2/1P2p3/1Q1pk3/4pp1N/2P1n3/2pP4/2K5

#2

8 + 8

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Sg6#
    • 1...f6
      • 2.Bc7#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qd4#
        • 2.Qd6#
        • 2.Qc7#
      • 1...f3
        • 2.Qd6#
        • 2.Qc7#
      • 1...Sc4
        • 2.Qd4#
      • 1...Sf5!
  • Keys
    • 1.Qe2!
      • 1...f3
        • 2.Qh2#
      • 1...Sd1
        • 2.d4#
      • 1...Sf1
        • 2.d4#
      • 1...Sg2
        • 2.d4#
      • 1...Sc4
        • 2.d4#
      • 1...Sg4
        • 2.d4#
      • 1...Sf5
        • 2.Sf3#
      • 1...d4
        • 2.cxd4#
      • 1...f5
        • 2.Sg6#
      • 1...f6
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(h);N_GUARD,SBLOCK::S(D)
    • P(h);SBLOCK::B(H)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);::QAB1(E)
      • Refutation
        • S(b);
  • Actual
    • Q(E);N_PINP(e)
    • Vars
      • P(d);OGATEB::QAB(E)
      • S(b);P_SPINP(c)::P(B)
      • S(b);P_SPINP(c),SBLOCK::S(D)
      • P(e);OGATE::P(C),XP(e)
      • P(h);N_GUARD,SBLOCK::S(D)
      • P(h);SBLOCK::B(H)
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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).