MESON Chess Problem Database

Problem Display
PID: 227409 (6nQ/4p1p1/2K1pP1r/4k2P/2p2R2/p4P2/P2P2NP/2B5 w - - 0 1)

Cozens, EC

Sunday Chronicle, 1947

(First published on Wed Mar 19 1947)

6nQ/4p1p1/2K1pP1r/4k2P/2p2R2/p4P2/P2P2NP/2B5

#2

11 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf6
      • 2.Qb8#
    • 1...c3
      • 2.d4#
  • Tries
    • 1.Bb2+?
      • 1...c3
        • 2.Bxc3#
        • 2.d4#
      • 1...axb2!
  • Keys
    • 1.Sh4!
      • 1...Kxf4
        • 2.d4#
      • 1...Rxh5
        • 2.Sg6#
      • 1...Rxf6
        • 2.Re4#
      • 1...Rxh8
        • 2.Sg6#
      • 1...Sxf6
        • 2.Qb8#
      • 1...exf6
        • 2.Re4#
      • 1...gxf6
        • 2.Re4#
      • 1...Rg6
        • 2.Sxg6#
      • 1...Rh7
        • 2.Sg6#
      • 1...c3
        • 2.d4#
      • 1...g5
        • 2.Re4#
      • 1...g6
        • 2.Re4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(h);OGATE,XP(J)::QAB(K)
    • P(b);N_GUARD::P(C)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • P(a);XB(A)
  • Actual
    • S(D);
    • Vars
      • K(c);S_FLIGHT,XR(G)::B(A)+P(C)
      • R(e);N_GUARD,XP(H)::S(D)
      • R(e);SBLOCK,XP(J)::R1(G)
      • R(e);N_GUARD,XQ(K)::S(D)
      • S(h);OGATE,XP(J)::QAB(K)
      • P(f);SBLOCK,XP(J)::R1(G)
      • P(g);P_SPINP(g),XP(J)::R1(G)
      • R(e);N_GUARD::S(D),XR(e)
      • R(e);N_GUARD::S(D)
      • P(b);N_GUARD::P(C)
      • P(g);::R1(G)
HTML5 logo

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).