MESON Chess Problem Database

Problem Display
PID: 12074 (8/4K3/4B3/1p2k3/1P1pPp2/4n3/3N4/Q7 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1974

8/4K3/4B3/1p2k3/1P1pPp2/4n3/3N4/Q7

#2

6 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Qa8?
      • threat
        • 2.Sf3#
        • 2.Qb8#
        • 2.Qh8#
      • 1...Sd5+
        • 2.Qxd5#
      • 1...d3
        • 2.Sf3#
        • 2.Qa1#
        • 2.Qh8#
      • 1...f3
        • 2.Qb8#
      • 1...Sc4
        • 2.Sf3#
        • 2.Qd5#
        • 2.Qh8#
      • 1...Sg4
        • 2.Sf3#
        • 2.Qd5#
        • 2.Qb8#
      • 1...Sf5+!
  • Keys
    • 1.Qe1!
      • 1...Sd5+
        • 2.exd5#
      • 1...Sf5+
        • 2.exf5#
      • 1...d3
        • 2.Qa1#
      • 1...f3
        • 2.Qg3#
      • 1...Sd1
        • 2.Sf3#
      • 1...Sf1
        • 2.Sf3#
      • 1...Sc2
        • 2.Sf3#
      • 1...Sg2
        • 2.Sf3#
      • 1...Sc4
        • 2.Sf3#
      • 1...Sg4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(A),XS(a)
        • P(c);::QAB(A)
      • Refutation
        • S(a);CHECK
  • Actual
    • Q(A);N_PINP(b)
    • Vars
      • S(a);CHECK,OGATE::QAR(A)+P(D),XS(a)
      • P(b);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
      • S(a);::S(B)
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Developed and maintained by Brian Stephenson.
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