MESON Chess Problem Database

Problem Display
PID: 10902 (6b1/1p1K1p2/4N1R1/3pk1pR/3p2pb/3Bp1p1/8/7Q w - - 0 1)

Castellari, Umberto

1st Prize, Sinfonie Scacchistiche, 1969

6b1/1p1K1p2/4N1R1/3pk1pR/3p2pb/3Bp1p1/8/7Q

#2

6 + 11

14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Tries
    • 1.Rhxg5+?
      • 1...f5
        • 2.Rxf5#
      • 1...Bxg5!
    • 1.Rgxg5+?
      • 1...Kf6
        • 2.Rh6#
        • 2.Qf1#
      • 1...f5
        • 2.Rxf5#
      • 1...Bxg5!
    • 1.Qf3?
      • threat
        • 2.Qf4#
        • 2.Qf5#
        • 2.Qf6#
      • 1...fxe6
        • 2.Qf6#
      • 1...fxg6
        • 2.Qf4#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qf4#
        • 2.Qf5#
        • 2.Qxf6#
      • 1...gxf3!
    • 1.Qxh4?
      • threat
        • 2.Qxg3#
      • 1...fxg6
        • 2.Qxg5#
      • 1...g2
        • 2.Qg3#
      • 1...f5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf4#
        • 2.Qf5#
        • 2.Qf6#
      • 1...fxe6
        • 2.Qf6#
      • 1...fxg6
        • 2.Qf4#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qf4#
        • 2.Qf5#
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK,XP(h)
      • Vars
        • P(j);P_SPINP(j)::R1(C),XP(j)
      • Refutation
        • B(e);XR(C)
    • Try
      • R(E);CHECK,XP(h)
      • Vars
        • P(j);P_SPINP(j)::R1(E),XP(j)
      • Refutation
        • B(e);P_SPINB(e),XR(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(j);XS(D)::QAB1(A)
        • P(j);XR(E)::QAB1(A)
        • P(j);N_SPINP(h)::QAR1(A),XP(j)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);XB(e)
      • Threat
        • QAB(A),XP(b)
      • Vars
        • P(j);N_GUARD,XR(E)::QAR2(A),XP(h)
        • P(b);::QAB(A)
      • Refutation
        • P(j);N_SPINP(h)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • P(j);XS(D)::QAB1(A)
      • P(j);XR(E)::QAB1(A)
      • P(j);N_SPINP(h)::QAR1(A),XP(j)
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