MESON Chess Problem Database

Problem Display
PID: 33195 (8/n7/8/N7/kB6/2P5/3KQ3/8 w - - 0 1)

Scotti, Louis

Europe Echecs, 1959

8/n7/8/N7/kB6/2P5/3KQ3/8

#2

5 + 2

3310 2345 Chess Problems 1997
4883 Still More Fun with Chess Miniatures 2002
56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Qd1#
    • 1...Sc8
      • 2.Qe8#
  • Tries
    • 1.Kc1?
      • 1...Sb5
        • 2.Qd1#
        • 2.Qc2#
      • 1...Sc8
        • 2.Qe8#
      • 1...Sc6!
    • 1.Kd1?
      • 1...Sb5
        • 2.Qc2#
      • 1...Sc8
        • 2.Qe8#
      • 1...Sc6!
    • 1.Ke1?
      • 1...Sb5
        • 2.Qd1#
        • 2.Qc2#
      • 1...Sc8
        • 2.Qe8#
      • 1...Sc6!
    • 1.Qd3?
      • 1...Sb5
        • 2.Qc2#
      • 1...Sc8
        • 2.Qd7#
      • 1...Sc6!
    • 1.Qf3?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb5
        • 2.Qd1#
      • 1...Sc8
        • 2.Qc6#
      • 1...Kb5!
    • 1.Qh5?
      • 1...Sb5
        • 2.Qd1#
      • 1...Sc8
        • 2.Qe8#
      • 1...Sc6!
    • 1.Qa6?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sc8
        • 2.Qc6#
      • 1...Sb5!
    • 1.Qe4?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb5
        • 2.Qc2#
      • 1...Sc8
        • 2.Qc6#
        • 2.Qe8#
      • 1...Kb5!
    • 1.Qe6?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb5
        • 2.Qb3#
      • 1...Sc8
        • 2.Qd7#
        • 2.Qc6#
        • 2.Qe8#
      • 1...Kb5!
    • 1.Qe8+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb5!
  • Keys
    • 1.Qc4!
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb5
        • 2.Qb3#
      • 1...Sc8
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB(B)
    • S(b);N_GUARD::QAB(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);SBLOCK::QAB(B)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • Q(B);
      • Vars
        • S(b);SBLOCK::QAB(B)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAB(B),XS(b)
        • S(b);SBLOCK::QAB(B)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(b);SBLOCK::QAB(B)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAB(B),XS(b)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • S(b);
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAB(B),XS(b)
        • S(b);SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::QAB(B),XS(b)
        • S(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(B),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(B);
    • Vars
      • S(b);N_GUARD::QAB(B),XS(b)
      • S(b);SBLOCK::QAB1(B)
      • S(b);N_GUARD::QAB(B)
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