MESON Chess Problem Database

Problem Display
PID: 276065 (2b3nK/3Bbp2/4Npk1/7N/6p1/5R2/3B4/7Q w - - 0 1)

Cocozza, Mario

Notaro, Rosario

Mat, 1981

2b3nK/3Bbp2/4Npk1/7N/6p1/5R2/3B4/7Q

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bd8
      • 2.Sf8#
    • 1...Bf8
      • 2.Sxf8#
    • 1...fxe6
      • 2.Be8#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qh5#
        • 2.Qh7#
      • 1...Sh6
        • 2.Qh5#
        • 2.Qxh6#
      • 1...f5!
    • 1.Shg7?
      • threat
        • 2.Qh5#
        • 2.Qh7#
      • 1...fxe6
        • 2.Be8#
        • 2.Qh5#
      • 1...Sh6
        • 2.Qh5#
        • 2.Qxh6#
      • 1...f5!
    • 1.Qb1+?
      • 1...f5
        • 2.Qxf5#
      • 1...Kxh5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxg4#
      • 1...gxf3
        • 2.Qg4#
      • 1...fxe6
        • 2.Be8#
      • 1...Sh6
        • 2.Sef4#
      • 1...g3
        • 2.Qg4#
      • 1...f5
        • 2.Shf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::S(E)
    • B(d);N_GUARD::S(E),XB(d)
    • P(e);OGATEB,XS(E)::B(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XS(D)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A),XP(a)
    • Vars
      • P(a);XR(C)::QAR2(A)
      • P(e);OGATEB,XS(E)::B(F)
      • S(g);SBLOCK::S(E)
      • P(a);::QAR2(A)
      • P(b);SBLOCK::S(D)
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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).