MESON Chess Problem Database

Problem Display
PID: 104689 (4Q3/8/5p2/1ppnP3/3k1N1R/2p1p3/2P1P1r1/3K1b1B w - - 0 1)

Chicco, Adriano

Il Littorale, 1929-1931

4Q3/8/5p2/1ppnP3/3k1N1R/2p1p3/2P1P1r1/3K1b1B

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxe2#
      • 2.Sxd5#
    • 1...Bxe2+
      • 2.Sxe2#
    • 1...fxe5
      • 2.Se6#
  • Tries
    • 1.Sxd5+?
      • 1...Rg4
        • 2.Rxg4#
      • 1...Kxd5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxd5#
      • 1...Bxe2+
        • 2.Sxe2#
      • 1...Kc4
        • 2.Sxg2#
      • 1...Ke4
        • 2.Sxd5#
      • 1...Sxf4
        • 2.Rxf4#
      • 1...Sb4
        • 2.Sxg2#
      • 1...Sb6
        • 2.Sxg2#
      • 1...Sc7
        • 2.Sxg2#
      • 1...Se7
        • 2.Sxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);CHECK,XP(D)::R(F)+S(E),DCHECK,XB(a)
    • P(i);SBLOCK,XP(G)::R(F)+S(E),DCHECK
  • Tries
    • Try
      • S(E);CHECK,XS(h)
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::R(F),XR(b)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(b),XS(E)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XS(h)
    • Vars
      • B(a);CHECK,XP(D)::R(F)+S(E),DCHECK,XB(a)
      • K(e);P-FLIGHT,P_SPINS(h)::R(F)+S(E),XR(b)
      • K(e);P-FLIGHT,P_SPINR(b)::R(F)+S(E),XS(h)
      • S(h);OGATE,P_SPINS(h),XS(E)::R(F),XS(h)
      • S(h);N_GUARD::R(F)+S(E),XR(b)
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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).