MESON Chess Problem Database

Problem Display
PID: 138360 (1nR5/1Q1rb3/5P2/2ppNR2/p2k4/Pb1p1P2/3P4/4K3 w - - 0 1)

Righi, Mario

Freie Presse, 1988

1nR5/1Q1rb3/5P2/2ppNR2/p2k4/Pb1p1P2/3P4/4K3

#2

9 + 9

14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qb2#
    • 1...Ba2
      • 2.Qb2#
    • 1...Bc2
      • 2.Qb2#
    • 1...Bc4
      • 2.Qb2#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Rf4#
      • 1...Kc4
        • 2.Qb4#
      • 1...Bd6!
    • 1.Sg6?
      • threat
        • 2.Rf4#
      • 1...Kc4
        • 2.Qb4#
      • 1...Bd6!
    • 1.Sf7?
      • threat
        • 2.Rf4#
      • 1...Kc4
        • 2.Qb4#
      • 1...Bd6!
    • 1.Qxb3?
      • threat
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qxd3#
      • 1...Rb7
        • 2.Qc3#
        • 2.Qxd3#
      • 1...c4
        • 2.Qc3#
      • 1...axb3!
    • 1.Qb4+?
      • 1...Bc4
        • 2.Qc3#
        • 2.Qb2#
      • 1...c4
        • 2.Qc3#
      • 1...cxb4!
    • 1.Qb5?
      • threat
        • 2.Qxd3#
      • 1...Bc2
        • 2.Qb2#
      • 1...Bc4
        • 2.Qb2#
      • 1...c4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Rf4#
      • 1...Kxc4
        • 2.Qb4#
      • 1...Bxc4
        • 2.Qb2#
      • 1...dxc4
        • 2.Qe4#
      • 1...Bd6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(a);OGATE::QAB(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR1(H)
      • Refutation
        • B(h);
    • Try
      • S(E);
      • Threat
        • R(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR1(H)
      • Refutation
        • B(h);
    • Try
      • S(E);
      • Threat
        • R(F)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR1(H)
      • Refutation
        • B(h);
    • Try
      • Q(H);XB(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(e);::QAB1(H)
      • Refutation
        • P(c);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAB1(H)
      • Refutation
        • P(e);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(b)
      • Vars
        • B(a);OGATE::QAB(H)
      • Refutation
        • P(e);
  • Actual
    • S(E);
    • Threat
      • R(F)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(e),XS(E)::QAR1(H)
      • B(a);OGATE,SBLOCK,XS(E)::QAB(H)
      • P(f);OGATE,SBLOCK,XS(E)::QAR1(H)
      • B(h);S_CUTR(g)::QAR1(H),XP(f)
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