MESON Chess Problem Database

Problem Display
PID: 138274 (2kN4/K1p1B3/6p1/8/3Qp1R1/3p1q1B/8/8 w - - 0 1)

Notaro, Rosario

2nd HM., Scacco!, 1975

2kN4/K1p1B3/6p1/8/3Qp1R1/3p1q1B/8/8

#2

6 + 6

14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Rxg2#
    • 1...Qxg4
      • 2.Bxg4#
    • 1...Qf2
      • 2.Rf4#
    • 1...Qe3
      • 2.Rg3#
    • 1...Qg3
      • 2.Rxg3#
    • 1...Qf4
      • 2.Rxf4#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qd8#
      • 1...Qf2
        • 2.Rf4#
      • 1...Qe3
        • 2.Rg3#
      • 1...Qf8!
    • 1.Sb7?
      • threat
        • 2.Qd8#
      • 1...Qf2
        • 2.Rf4#
      • 1...Qe3
        • 2.Rg3#
      • 1...Qf8!
    • 1.Rg3+?
      • 1...Qg4
        • 2.Bxg4#
      • 1...Qf5!
    • 1.Rf4+?
      • 1...Qg4
        • 2.Bxg4#
      • 1...Qxh3!
    • 1.Rxg6+?
      • 1...Qg4
        • 2.Bxg4#
      • 1...Qf5
        • 2.Bxf5#
      • 1...Qxh3!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qd8#
      • 1...Qf2
        • 2.Rf4#
      • 1...Qe3
        • 2.Rg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::B(A)+R(C),XQ(b)
    • Q(b);OGATE,P_SPINQ(b),XR(C)::B(A),XQ(b)
    • Q(b);N_GUARD,P_PINQ(B)::B(A)+R(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • Q(b);N_GUARD,P_PINQ(B)::B(A)+R(C)
      • Refutation
        • Q(b);
    • Try
      • S(F);
      • Threat
        • QAR1(B)
      • Vars
        • Q(b);N_GUARD,P_PINQ(B)::B(A)+R(C)
      • Refutation
        • Q(b);
    • Try
      • R(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(A),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • R(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(A),XQ(b)
      • Refutation
        • Q(b);XB(A)
    • Try
      • R(C);CHECK,XP(d)
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(A),XQ(b)
      • Refutation
        • Q(b);XB(A)
  • Actual
    • S(F);
    • Threat
      • QAR1(B)
    • Vars
      • Q(b);N_GUARD,P_PINQ(B)::B(A)+R(C)
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