MESON Chess Problem Database

Problem Display
PID: 268534 (Qn6/2b3R1/4BP2/4pK2/1R2N3/1p5k/2q4p/4B1nr w - - 0 1)

Chicco, Adriano

64 Shakhmatnoe obozrenie, 1932

Qn6/2b3R1/4BP2/4pK2/1R2N3/1p5k/2q4p/4B1nr

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sf2#
      • 2.Sg5#
    • 1...Qxe4+
      • 2.Kxe4#
    • 1...Qc1
      • 2.Sf2#
    • 1...Qa2
      • 2.Sg5#
    • 1...Qb2
      • 2.Sg5#
    • 1...Qe2
      • 2.Sg5#
    • 1...Qf2+
      • 2.Sxf2#
    • 1...Qg2
      • 2.Rh7#
    • 1...Qc3
      • 2.Sf2#
      • 2.Sg5#
    • 1...Qc4
      • 2.Sg5#
    • 1...Qc5
      • 2.Sg5#
    • 1...Qc6
      • 2.Sf2#
    • 1...Ba5
      • 2.Kxe5#
    • 1...Bb6
      • 2.Kxe5#
    • 1...Bd8
      • 2.Kxe5#
    • 1...Sa6
      • 2.Qh8#
    • 1...Sc6
      • 2.Qh8#
    • 1...Sd7
      • 2.Qh8#
  • Tries
    • 1.Rxb3+?
      • 1...Qxb3
        • 2.Sg5#
      • 1...Qc3
        • 2.Sg5#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Qd3!
  • Keys
    • 1.f7!
      • threat
        • 2.Kf6#
      • 1...Qxe4+
        • 2.Kxe4#
      • 1...Qf2+
        • 2.Sxf2#
      • 1...Qd1
        • 2.Sf2#
        • 2.Sg5#
      • 1...Qe2
        • 2.Sg5#
      • 1...Qg2
        • 2.Rh7#
      • 1...Qc4
        • 2.Sg5#
      • 1...Qc6
        • 2.Sf2#
      • 1...Bd8
        • 2.Kxe5#
      • 1...Sd7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(c);CHECK,XS(C)::B(E)+K(D),XQ(c)
    • Q(c);N_PINS(C)::S(C)
    • Q(c);CHECK,N_PINS(C)::S(C),XQ(c)
    • Q(c);N_PINS(C),SBLOCK::R(G)
    • B(h);::B(E)+K(D),XP(g)
    • S(i);OGATE::QAR(H)
  • Tries
    • Try
      • R(B);CHECK,XP(e)
      • Vars
        • Q(c);N_PINS(C),XR(B)::S(C)
        • Q(c);N_PINS(C),P_SPINQ(c)::S(C)
        • S(a);N_GUARD,P_SPINS(a)::R(B),XS(a)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • P(F);
    • Threat
      • B(E)+K(D)
    • Vars
      • Q(c);CHECK,XS(C)::B(E)+K(D),XQ(c)
      • Q(c);CHECK,N_PINS(C)::S(C),XQ(c)
      • Q(c);N_PINS(C)::S(C)
      • Q(c);N_PINS(C),SBLOCK::R(G)
      • B(h);::B(E)+K(D),XP(g)
      • S(i);OGATE::QAR(H)
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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).