MESON Chess Problem Database

Problem Display
PID: 192823 (1B1R4/4n3/3Npp2/R2rPB1K/N2k3p/3pr3/3Q4/3n4 w - - 0 1)

Rizzetti, Dante Hugo

2nd Prize, Israel Ring Ty., 1958

1B1R4/4n3/3Npp2/R2rPB1K/N2k3p/3pr3/3Q4/3n4

#2

9 + 9

16325 Seleccion de Problemas de Dante Hugo Rizzetti (Kapros) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Qf4#
    • 1...Rh3
      • 2.Qf4#
    • 1...Rexe5
      • 2.Qxd3#
    • 1...Rdxe5
      • 2.Qb4#
    • 1...Rxd6
      • 2.Qb4#
    • 1...Sb2
      • 2.Qc3#
      • 2.Qxb2#
    • 1...Sf2
      • 2.Qc3#
      • 2.Qb2#
    • 1...Sc3
      • 2.Qxc3#
    • 1...fxe5
      • 2.Qb4#
  • Tries
    • 1.Qb2+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
    • 1.Qxd3+?
      • 1...Kxe5
        • 2.Sc4#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Rxd3!
  • Keys
    • 1.Bxd3!
      • threat
        • 2.Sb5#
      • 1...Rexe5+
        • 2.Bf5#
      • 1...Rdxe5+
        • 2.Sf5#
      • 1...Kxe5
        • 2.Sf5#
      • 1...Rxd3
        • 2.Qf4#
      • 1...Rxd6
        • 2.Ba7#
      • 1...Rb5
        • 2.Sxb5#
        • 2.Sf5#
      • 1...Sc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE::QAR2(A)
    • R(c);N_GUARD,P_PINB(E),SBLOCK,XP(D)::QAR1(A),XP(b)
    • R(f);P_PINB(E),XP(D)::QAR2(A)
    • R(f);P_SPINR(f),XS(G)::QAR2(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(h);SBLOCK,XP(D)::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK,N_PINP(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK,XP(b)
      • Refutation
        • R(c);XQ(A)
  • Actual
    • B(E);P_SPINP(D),XP(b)
    • Threat
      • S(G)
    • Vars
      • R(c);CHECK,N_GUARD,SBLOCK,XP(D)::QAR(A)+B(E)
      • R(f);CHECK,XP(D)::R(I)+S(G),DCHECK
      • K(d);P_SPINR(f),S_FLIGHT,XP(D)::B(H)+S(G)
      • R(c);OGATE,P_SPINR(c),SBLOCK,XB(E)::QAR2(A)
      • R(f);N_GUARD,N_PINP(D),P_SPINR(f),XS(G)::B(H)
      • S(a);N_GUARD::QAB1(A),XS(a)
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