MESON Chess Problem Database

Problem Display
PID: 226411 (4k1N1/3p1bP1/5pB1/B3q3/7R/K7/4Q3/8 w - - 0 1)

Barbaro, D

Il Due Mosse, 1952

4k1N1/3p1bP1/5pB1/B3q3/7R/K7/4Q3/8

#2

7 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3+
      • 2.Qxe3#
    • 1...Qe4
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Qe7+
      • 2.Qxe7#
    • 1...f5
      • 2.Qxe5#
    • 1...d5
      • 2.Qb5#
  • Keys
    • 1.Qe4!
      • 1...Qe7+
        • 2.Qxe7#
      • 1...Qxe4
        • 2.Rxe4#
      • 1...Bxg6
        • 2.Qxg6#
      • 1...d5
        • 2.Qa4#
      • 1...d6
        • 2.Qc6#
      • 1...Qe6
        • 2.Qa8#
      • 1...f5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,OGATEB::QAR(A),XQ(a)
    • Q(a);CHECK,OGATE::QAR1(A),XQ(a)
    • P(b);N_GUARD::QAR(A),XQ(a)
    • P(c);OGATEB::QAB(A)
  • Actual
    • Q(A);
    • Vars
      • Q(a);CHECK,OGATE::QAR1(A),XQ(a)
      • Q(a);N_SPINQ(a),OGATE,XQ(A)::R(C),XQ(a)
      • B(d);N_SPINB(d),OGATE,XB(E)::QAB(A),XB(d)
      • P(c);OGATEB::QAB(A)
      • Q(a);N_GUARD::QAR(A)
      • P(b);N_GUARD::QAR(A),XQ(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).