MESON Chess Problem Database

Problem Display
PID: 44064 (rn6/4PK2/p4R2/k3N3/N1B1r3/pP1b2b1/3R4/4B3 w - - 0 1)

Cristoffanini, Guido

Het Schaakleven, 1931

rn6/4PK2/p4R2/k3N3/N1B1r3/pP1b2b1/3R4/4B3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rdf2#
    • 1...Rf4
      • 2.Rf2#
    • 1...Rg4
      • 2.Rdf2#
    • 1...Rh4
      • 2.Rdf2#
    • 1...Bb1
      • 2.Rd5#
    • 1...Bf1
      • 2.Rd5#
    • 1...Bc2
      • 2.Rd5#
    • 1...Be2
      • 2.Rd5#
    • 1...Bxc4+
      • 2.Rd5#
    • 1...Bh2
      • 2.Re2#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Rxa6+?
      • 1...Kb4
        • 2.Sxd3#
      • 1...Sxa6
        • 2.Sc6#
      • 1...Rxa6!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Sc6#
      • 1...Bxc4+
        • 2.Rd5#
      • 1...Kb4
        • 2.Sxd3#
      • 1...Rxe5
        • 2.Rdf2#
      • 1...Bxe5
        • 2.Re2#
      • 1...Sc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(d);N_GUARD::B(A)+R(B)
    • R(d);N_GUARD,P_PINR(G)::B(A)+R(B)
    • R(d);N_GUARD,SBLOCK::B(A)+R(B)
    • B(b);OGATE::B(A)+R(B),DCHECK
    • B(b);CHECK,OGATE,XB(E)::B(A)+R(B),DCHECK
    • B(c);N_GUARD::B(A)+R(B)
    • S(h);N_GUARD::S(F),XS(h)
    • S(h);N_GUARD::S(F)
  • Tries
    • Try
      • R(G);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT::S(F),XB(b)
        • S(h);XR(G)::S(F)
      • Refutation
        • R(g);XR(G)
  • Actual
    • R(G);
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • B(b);CHECK,OGATE,XB(E)::B(A)+R(B),DCHECK
      • K(e);S_FLIGHT::S(F),XB(b)
      • R(d);N_GUARD,P_SPINR(d),XS(F)::B(A)+R(B)
      • B(c);N_GUARD,P_SPINB(c),XS(F)::B(A)+R(B)
      • S(h);::R(G)+S(F),DCHECK,XS(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).