MESON Chess Problem Database

Problem Display
PID: 12367 (5b2/8/K7/1p1N4/k7/1p6/8/2Q5 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1978

5b2/8/K7/1p1N4/k7/1p6/8/2Q5

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Sb6#
    • 1...Bh6
      • 2.Qa1#
    • 1...b4
      • 2.Sb6#
      • 2.Qa1#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qa5#
      • 1...Ka3
        • 2.Qa1#
      • 1...Bb4
        • 2.Qxb4#
      • 1...b4
        • 2.Qa1#
      • 1...b2!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qa5#
      • 1...Ka3
        • 2.Qa1#
      • 1...Bb4
        • 2.Qxb4#
      • 1...b2
        • 2.Sb6#
      • 1...b4
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK::S(B)
    • B(d);N_GUARD::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(d);N_GUARD::QAR1(A),XB(d)
        • P(c);S_CUTB(d)::QAR(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • B(d);N_GUARD::QAR1(A),XB(d)
      • P(a);::S(B)
      • P(c);S_CUTB(d)::QAR(A)
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