MESON Chess Problem Database

Problem Display
PID: 98659 (4R2K/8/5N2/B3Q1N1/5p1p/1p2nPrB/1r3kpP/b6R w - - 0 1)

Rizzetti, Dante Hugo

Problemas, 1975

4R2K/8/5N2/B3Q1N1/5p1p/1p2nPrB/1r3kpP/b6R

#2

10 + 9

6490 yacpdb 2009
16325 Seleccion de Problemas de Dante Hugo Rizzetti (Kapros) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Sfe4#
    • 1...Sd1
      • 2.Be1#
      • 2.Qe1#
    • 1...Sf1
      • 2.Be1#
      • 2.Qe1#
    • 1...Sc2
      • 2.Qe2#
    • 1...Sc4
      • 2.Be1#
      • 2.Qe1#
    • 1...Sg4
      • 2.Be1#
      • 2.Qe1#
    • 1...Sd5
      • 2.Be1#
      • 2.Qe1#
    • 1...Sf5
      • 2.Be1#
      • 2.Qe1#
  • Tries
    • 1.Sg4+?
      • 1...Ke2
        • 2.Qb5#
      • 1...Sxg4
        • 2.Be1#
        • 2.Qe1#
      • 1...Rxg4!
    • 1.Qxb2+?
      • 1...Sc2
        • 2.Be1#
        • 2.Bb6#
      • 1...Bxb2!
  • Keys
    • 1.Qxf4!
      • threat
        • 2.Qxe3#
      • 1...Ke2
        • 2.Qxe3#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Re2
        • 2.Se4#
      • 1...Sd1
        • 2.Be1#
      • 1...Sf1
        • 2.Be1#
      • 1...Sc2
        • 2.Qd2#
      • 1...Sc4
        • 2.Be1#
      • 1...Sg4
        • 2.Be1#
      • 1...Sd5
        • 2.Be1#
      • 1...Sf5
        • 2.Be1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::S(H)
    • S(f);OGATE::QAR1(F)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(f)::QAB(F)
      • Refutation
        • R(g);XS(H)
    • Try
      • Q(F);CHECK,XR(b)
      • Refutation
        • B(a);P_PINS(H),XQ(F)
  • Actual
    • Q(F);XP(h)
    • Threat
      • QAB1(F),XS(f)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(f)::QAR1(F),XS(f)
      • R(g);OGATE,P_SPINR(g),XP(C)::QAR1(F),XR(g)
      • R(b);P_PINS(H),SBLOCK::S(G)
      • S(f);::B(E)
      • S(f);OGATE::QAR2(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).