MESON Chess Problem Database

Problem Display
PID: 12154 (1K6/1n6/k2n4/pp6/2N5/Q7/8/1R6 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1975

1K6/1n6/k2n4/pp6/2N5/Q7/8/1R6

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qxa5#
    • 1...Sd8
      • 2.Qxa5#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qb6#
        • 2.Qa7#
        • 2.Qc6#
      • 1...Sxc4
        • 2.Qa7#
        • 2.Qxb5#
      • 1...Sc8
        • 2.Qxb5#
      • 1...Sd8
        • 2.Qb6#
        • 2.Qa7#
      • 1...b4
        • 2.Qb6#
        • 2.Qc6#
      • 1...Sxc5!
    • 1.Qf3?
      • threat
        • 2.Qc6#
      • 1...Sxc4
        • 2.Qxb7#
      • 1...Sc8
        • 2.Qxb7#
      • 1...Sd8
        • 2.Qa8#
      • 1...Se4!
  • Keys
    • 1.Qa4!
      • 1...Sxc4
        • 2.Qxb5#
      • 1...bxa4
        • 2.Rb6#
      • 1...bxc4
        • 2.Qc6#
      • 1...Sc5
        • 2.Qxa5#
      • 1...Se4
        • 2.Qxb5#
      • 1...Sf5
        • 2.Qxb5#
      • 1...Sf7
        • 2.Qxb5#
      • 1...Sc8
        • 2.Qxb5#
      • 1...Se8
        • 2.Qxb5#
      • 1...Sd8
        • 2.Qxa5#
      • 1...b4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAR1(B),XP(a)
  • Tries
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • DUALS(3)
      • Vars
        • S(d);N_GUARD::QAB1(B),XP(b)
      • Refutation
        • S(e);XQ(B)
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAR2(B)
      • Vars
        • S(d);N_GUARD,XS(C)::QAB1(B),XS(e)
        • S(d);N_GUARD::QAB1(B),XS(e)
        • S(e);OGATE::QAR2(B)
      • Refutation
        • S(d);
  • Actual
    • Q(B);
    • Vars
      • S(d);N_GUARD,XS(C)::QAB1(B),XP(b)
      • P(b);N_SPINP(a),OGATE,XQ(B)::R1(A)
      • P(b);OGATE,XS(C)::QAR2(B)
      • S(e);N_GUARD::QAR1(B),XP(a)
      • S(d);N_GUARD::QAB1(B),XP(b)
      • P(b);OGATE::QAR2(B)
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