MESON Chess Problem Database

Problem Display
PID: 260824 (8/B2B4/n2k4/4N3/5K2/8/5Q2/8 w - - 0 1)

de Barbieri, Vittorio

Nuova Rivista degli Scacchi, 1891

8/B2B4/n2k4/4N3/5K2/8/5Q2/8

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qd4#
      • 2.Qd2#
    • 1...Kc7
      • 2.Qb6#
    • 1...Sb4
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sc7
      • 2.Qc5#
    • 1...Sb8
      • 2.Qc5#
  • Tries
    • 1.Kf3?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Kg3?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Ke4?
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc7
        • 2.Bc5#
        • 2.Qc5#
        • 2.Qf8#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Kg4?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Kf5?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd2#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Bb6?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd2#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Bh3?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd2#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Bg4?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd2#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Bf5?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd2#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Qg1?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qd1#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Qe3?
      • 1...Kd5
        • 2.Qd2#
        • 2.Qd4#
        • 2.Qd3#
      • 1...Kc7
        • 2.Qb6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
    • 1.Qd4+?
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Be6#
        • 2.Qd4#
        • 2.Qc6#
        • 2.Qe6#
      • 1...Ke7!
    • 1.Qc2?
      • 1...Kd5
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qc6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Ke7!
  • Keys
    • 1.Kg5!
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7
        • 2.Qf6#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAB1(A)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A)
        • K(b);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A)
        • K(b);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAB1(A),XS(a)
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A)
        • K(b);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
        • S(a);N_GUARD::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(A)
      • K(b);N_GUARD,S_FLIGHT,XS(C)::QAB1(A)
      • K(b);N_GUARD,S_FLIGHT::QAB1(A)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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