MESON Chess Problem Database

Problem Display
PID: 12147 (k1K5/8/1Pp5/3p4/8/8/7n/5n1Q w - - 0 1)

di Vincenzi, Renato

Unpublished, 1975

k1K5/8/1Pp5/3p4/8/8/7n/5n1Q

#2

3 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qa1#
    • 1...Se3
      • 2.Qa1#
    • 1...Sg3
      • 2.Qa1#
    • 1...d4
      • 2.Qxc6#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qa4#
      • 1...d4
        • 2.Qxc6#
      • 1...dxe4!
    • 1.Qxh2?
      • threat
        • 2.Qb8#
        • 2.Qa2#
      • 1...Sd2
        • 2.Qb8#
      • 1...Sg3
        • 2.Qa2#
      • 1...Sxh2!
  • Keys
    • 1.Kc7!
      • 1...Sd2
        • 2.Qa1#
      • 1...Se3
        • 2.Qa1#
      • 1...Sg3
        • 2.Qa1#
      • 1...Sf3
        • 2.Qh8#
      • 1...Sg4
        • 2.Qh8#
      • 1...d4
        • 2.Qxc6#
      • 1...c5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A)
    • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
    • P(d);OGATEB,P_SPINP(c)::QAB(A),XP(c)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(A)
        • S(a);::QAR(A)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • S(a);OGATE::QAB(A)
      • S(b);OGATE::QAB1(A)
      • P(c);OGATE,P_SPINP(d)::QAB(A),XP(d)
      • P(d);OGATEB,P_SPINP(c)::QAB(A),XP(c)
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