MESON Chess Problem Database

Problem Display
PID: 157280 (8/1K6/1NRp4/bk6/2r5/B7/Qn6/5b2 w - - 0 1)

Macina, Pasquale

5th Comm., Best Problems, 2008

8/1K6/1NRp4/bk6/2r5/B7/Qn6/5b2

#2

5 + 6

4901 Best Problems 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qd5#
    • 1...Rb4
      • 2.Qd5#
    • 1...Re4
      • 2.Qd5#
    • 1...Rf4
      • 2.Qd5#
    • 1...Rg4
      • 2.Qd5#
    • 1...Rh4
      • 2.Qd5#
    • 1...Sd3
      • 2.Qxc4#
  • Tries
    • 1.Qb3+?
      • 1...Rb4
        • 2.Qd5#
      • 1...Bb4!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qxa5#
      • 1...Kxb4
        • 2.Qxb2#
      • 1...Rxb4
        • 2.Qd5#
      • 1...Bxb4
        • 2.Qa6#
      • 1...Bxb6
        • 2.Rxb6#
      • 1...Sa4
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(c);OGATE::QAR2(A)
    • S(b);N_GUARD,S_CUTB(a)::QAB1(A),XR(c)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);OGATE,P_SPINR(c)::QAR2(A)
      • Refutation
        • B(d);P_SPINB(d)
  • Actual
    • B(B);
    • Threat
      • QAR1(A),XB(d)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XB(B)::QAR2(A),XS(b)
      • R(c);OGATE,SBLOCK,XB(B)::QAR2(A)
      • B(d);OGATE,SBLOCK,XB(B)::QAB1(A)
      • B(d);OGATE,XS(C)::R1(D),XB(d)
      • S(b);N_GUARD::QAB1(A),XS(b)
HTML5 logo

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).