MESON Chess Problem Database

Problem Display
PID: 133380 (5N2/4p1B1/2p2n2/2Rr1k1N/5bpP/8/1Q6/K6B w - - 0 1)

Mitchell, H

The Field, 1961

(First published on Thu Feb 9 1961)

5N2/4p1B1/2p2n2/2Rr1k1N/5bpP/8/1Q6/K6B

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sxh5
      • 2.Qb1#
      • 2.Qc2#
    • 1...Sd7
      • 2.Qb1#
      • 2.Qc2#
    • 1...Sh7
      • 2.Qb1#
      • 2.Qc2#
    • 1...Se8
      • 2.Qb1#
      • 2.Qc2#
    • 1...Sg8
      • 2.Qb1#
      • 2.Qc2#
    • 1...e6
      • 2.Qxf6#
  • Tries
    • 1.Qb1+?
      • 1...Se4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Qc2+?
      • 1...Se4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Ke5!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qxf4#
      • 1...Ke5
        • 2.Qxf4#
      • 1...Sxh5
        • 2.Qc2#
      • 1...e5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD::QAR1(C),XS(f)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(f)
  • Actual
    • Q(C);P_PINB(a)
    • Threat
      • QAR1(C),XB(a)
    • Vars
      • K(d);N_SPINB(a),P-FLIGHT,P_SPINS(f)::QAB1(C),XB(a)
      • S(f);N_GUARD,XS(F)::QAB(C)
      • P(g);N_SPINR(c),SBLOCK::S(F)
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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).