MESON Chess Problem Database

Problem Display
PID: 6149 (Kn6/1BB5/2n5/1k6/8/Q7/3N4/8 w - - 0 1)

Schiffert, Gyorgy

2nd Prize, Magyar Hirlap, 1927

Kn6/1BB5/2n5/1k6/8/Q7/3N4/8

#2

5 + 3

422 Suomen Tehtavaniekat 1991
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qa5#
    • 1...Sd4
      • 2.Qa5#
    • 1...Sa5
      • 2.Qxa5#
    • 1...Se5
      • 2.Qa5#
    • 1...Sa7
      • 2.Qa5#
    • 1...Se7
      • 2.Qa5#
    • 1...Sd8
      • 2.Qa5#
    • 1...Sa6
      • 2.Bxa6#
    • 1...Sd7
      • 2.Ba6#
  • Tries
    • 1.Bd8?
      • 1...Sb4
        • 2.Qa5#
      • 1...Sd4
        • 2.Qa5#
      • 1...Sa5
        • 2.Qxa5#
      • 1...Se5
        • 2.Qa5#
      • 1...Sa7
        • 2.Qa5#
      • 1...Se7
        • 2.Qa5#
      • 1...Sa6
        • 2.Bxa6#
      • 1...Sd7
        • 2.Ba6#
      • 1...Sxd8!
    • 1.Qa2?
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Sb4
        • 2.Qa5#
      • 1...Sa5
        • 2.Qxa5#
      • 1...Se5
        • 2.Qa5#
      • 1...Kb4!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Sb4!
    • 1.Qc3?
      • threat
        • 2.Qc4#
      • 1...Ka4
        • 2.Qb3#
      • 1...Sa5
        • 2.Qxa5#
      • 1...Se5
        • 2.Qa5#
      • 1...Sb4!
    • 1.Qd3+?
      • 1...Ka4
        • 2.Qb3#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kb4!
    • 1.Qa4+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxa4!
  • Keys
    • 1.Bd6!
      • 1...Kb6
        • 2.Qc5#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qb4#
      • 1...Sa5
        • 2.Qb4#
      • 1...Se5
        • 2.Qb4#
      • 1...Sa7
        • 2.Qb4#
      • 1...Se7
        • 2.Qb4#
      • 1...Sd8
        • 2.Qb4#
      • 1...Sa6
        • 2.Qxa6#
      • 1...Sd7
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 9
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • S(c);N_GUARD::B(C),XS(c)
    • S(c);N_GUARD::B(C)
  • Tries
    • Try
      • B(D);
      • Vars
        • S(b);N_GUARD::QAR1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(c);N_GUARD::B(C),XS(c)
        • S(c);N_GUARD::B(C)
      • Refutation
        • S(b);XB(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • S(b);N_GUARD::QAR1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • S(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • B(D);
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • S(b);N_GUARD::QAR1(B)
      • S(c);N_GUARD::QAB1(B),XS(c)
      • S(c);N_GUARD::QAB1(B)
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