MESON Chess Problem Database

Problem Display
PID: 18005 (2k5/1R1p1N2/Pp2p3/2q2BK1/8/4R3/8/2Q5 w - - 0 1)

Lipton, Michael

The Problemist, 1952

2k5/1R1p1N2/Pp2p3/2q2BK1/8/4R3/8/2Q5

#2

7 + 5

3174 The Two-move Chess Problem Tradition and Development 1966
14867 BCPS Library 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Qxc2#
    • 1...Qc3
      • 2.Rxc3#
      • 2.Qxc3#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qc7
      • 2.Qxc7#
    • 1...b5
      • 2.Qxc5#
    • 1...exf5
      • 2.Re8#
    • 1...e5
      • 2.Bxd7#
    • 1...d5
      • 2.Bxe6#
  • Keys
    • 1.Qc3!
      • 1...Qxc3
        • 2.Rxc3#
      • 1...exf5
        • 2.Re8#
      • 1...Qc6
        • 2.Qh8#
      • 1...Qc4
        • 2.Qh8#
        • 2.Qxc4#
      • 1...Qc7
        • 2.Qxc7#
      • 1...b5
        • 2.Qxc5#
      • 1...e5
        • 2.Bxd7#
      • 1...d5
        • 2.Bxe6#
      • 1...d6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_PINB(C),OGATEB::QAR(A),XQ(a)
    • Q(a);N_PINB(C),OGATE::QAR1(A),XQ(a)
    • P(b);N_GUARD::QAR(A),XQ(a)
    • P(c);XB(C)::R(B)
    • P(c);N_PINB(C),P_SPINP(d)::B(C),XP(d)
    • P(d);N_PINB(C),P_SPINP(c)::B(C),XP(c)
  • Actual
    • Q(A);
    • Vars
      • Q(a);N_PINB(C),N_SPINQ(a),XQ(A)::R(B),XQ(a)
      • P(c);XB(C)::R(B)
      • Q(a);N_GUARD,N_PINB(C)::QAR(A)
      • Q(a);N_PINB(C),OGATE::QAR1(A),XQ(a)
      • P(b);N_GUARD::QAR(A),XQ(a)
      • P(c);N_PINB(C),P_SPINP(d)::B(C),XP(d)
      • P(d);N_PINB(C),P_SPINP(c)::B(C),XP(c)
      • P(d);P_SPINP(c)::QAR(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).