MESON Chess Problem Database

Problem Display
PID: 277902 (8/4K1p1/2P2pr1/3Pk3/R2NqNB1/2B2P2/4QP2/1br5 w - - 0 1)

Peccinini, C

Schackvarlden, 1932

8/4K1p1/2P2pr1/3Pk3/R2NqNB1/2B2P2/4QP2/1br5

#2

11 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4+
      • 2.Se6#
    • 1...Qxe2
      • 2.Sc2#
    • 1...Qe3
      • 2.Sc2#
    • 1...Re1
      • 2.Sde6#
    • 1...Rf1
      • 2.Sde6#
    • 1...Rg1
      • 2.Sde6#
    • 1...Rh1
      • 2.Sde6#
    • 1...Rc2
      • 2.Qxe4#
    • 1...Ba2
      • 2.Qxe4#
    • 1...Bc2
      • 2.Sde6#
  • Tries
    • 1.Sd3+?
      • 1...Kxd5+
        • 2.Qxe4#
        • 2.fxe4#
      • 1...Bxd3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qb8#
      • 1...Kxf4+
        • 2.Se6#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Qxd5
        • 2.Sc2#
      • 1...Qxf4
        • 2.d6#
      • 1...f5
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • K(d);CHECK,N_SPINQ(c),S_CUTR(b),S_FLIGHT,XS(G)::S(F)
    • Q(c);N_SPINQ(c),XQ(A)::B(C)+S(F)
    • Q(c);::B(C)+S(F)
    • R(b);N_GUARD::B(C)+S(F)
    • R(b);S_CUTB(a)::QAR1(A),XQ(c)
    • B(a);N_GUARD::QAR1(A),XQ(c)
    • B(a);S_CUTR(b)::B(C)+S(F)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(a);XS(G)
  • Actual
    • Q(A);N_PINQ(c)
    • Threat
      • QAB(A)
    • Vars
      • K(d);CHECK,S_CUTQ(c),S_CUTR(b),S_FLIGHT,XS(G)::S(F)
      • Q(c);XP(D)::B(C)+S(F),DCHECK,XQ(c)
      • Q(c);N_GUARD,P_SPINQ(c),XP(I)::B(C)+S(F)
      • Q(c);N_GUARD,SBLOCK,XS(G)::QAR(A)+P(I)
      • P(e);S_CUTQ(c)::S(G),XR(f)
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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).