MESON Chess Problem Database

Problem Display
PID: 71134 (1B6/2n4p/3b1pbP/R1N1k3/8/1PPp3N/3K4/7Q w - - 0 1)

Anonymous

Source?, 0000

1B6/2n4p/3b1pbP/R1N1k3/8/1PPp3N/3K4/7Q

#2

9 + 7

5656 Sammlung Leichterer Schachaufgaben I (Dufresne) 1881
3530 Het Half Pin Thema (II) 1947

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bh5
      • 2.Qe4#
    • 1...Bf7
      • 2.Qe4#
    • 1...Be8
      • 2.Qe4#
    • 1...Se6
      • 2.Sxd3#
      • 2.Sd7#
  • Tries
    • 1.Qe1+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Kd5!
  • Keys
    • 1.c4!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf5
        • 2.Qe4#
      • 1...Bxc5
        • 2.Qd5#
      • 1...Be7
        • 2.Qd5#
      • 1...Bf8
        • 2.Qd5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bf5
        • 2.Qa1#
      • 1...Bh5
        • 2.Qe4#
      • 1...Bf7
        • 2.Qe4#
      • 1...Be8
        • 2.Qe4#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa6
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#
      • 1...Sa8
        • 2.Qd5#
      • 1...Se8
        • 2.Qd5#
      • 1...f5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAB1(A)
    • B(e);N_GUARD::QAR1(A),XB(e)
    • B(e);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
        • B(e);N_GUARD,P_SPINB(e)::QAR1(A),XB(e)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);P-FLIGHT::QAB1(A)
      • B(c);P_SPINB(c),P_SPINS(f),XS(G)::QAR1(A)
      • B(c);P_SPINS(f)::QAR1(A)
      • B(e);N_GUARD::QAR1(A),XB(e)
      • B(e);SBLOCK::QAB(A)
      • B(e);N_GUARD::QAR1(A)
      • S(f);N_GUARD,P_SPINB(c)::QAR1(A)
      • S(f);N_GUARD,P_SPINB(c)::QAR1(A),XS(f)
      • P(d);SBLOCK::QAB(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).