MESON Chess Problem Database

Problem Display
PID: 72299 (6K1/k7/1p6/5P2/1N6/1pp5/b5BB/Q4R2 w - - 0 1)

Ferber, Eugene

Taberner Wochenblatt, 1923

6K1/k7/1p6/5P2/1N6/1pp5/b5BB/Q4R2

#2

7 + 5

81 Chess 1953

SOLUTION

  • SOUND
  • Sets
    • 1...b2+
      • 2.Qxa2#
    • 1...c2
      • 2.Qg7#
  • Tries
    • 1.Kh7?
      • 1...c2
        • 2.Qg7#
      • 1...b2
        • 2.Qxa2#
      • 1...b5!
    • 1.Kf8?
      • 1...c2
        • 2.Qg7#
      • 1...b2
        • 2.Qxa2#
      • 1...b5!
    • 1.Kh8?
      • 1...c2
        • 2.Qg7#
      • 1...b2
        • 2.Qxa2#
      • 1...b5!
    • 1.Bh1?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Bf3?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Be4?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Bd5?
      • 1...c2
        • 2.Qg7#
      • 1...b2
        • 2.Qxa2#
      • 1...b5!
    • 1.Bc6?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Bg3?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Bf4?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Bd6?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Rb1?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Rc1?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Rd1?
      • threat
        • 2.Rd7#
      • 1...b2+
        • 2.Qxa2#
      • 1...b5!
    • 1.Re1?
      • threat
        • 2.Re7#
      • 1...b2+
        • 2.Qxa2#
      • 1...b5!
    • 1.Rg1?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Rf2?
      • 1...b2+
        • 2.Qxa2#
      • 1...c2
        • 2.Qg7#
      • 1...b5!
    • 1.Qb2?
      • threat
        • 2.Qa3#
      • 1...b5
        • 2.Qf2#
      • 1...cxb2!
    • 1.Qxc3?
      • threat
        • 2.Qg7#
        • 2.Qc7#
      • 1...b5
        • 2.Qd4#
        • 2.Qe3#
        • 2.Qc5#
        • 2.Qc7#
      • 1...b2+!
    • 1.Qc1?
      • threat
        • 2.Qa3#
      • 1...b5
        • 2.Qe3#
      • 1...b2+!
    • 1.Qd1?
      • threat
        • 2.Qd7#
      • 1...b5
        • 2.Qd4#
      • 1...b2+!
    • 1.Qe1?
      • threat
        • 2.Qe7#
      • 1...b5
        • 2.Qf2#
        • 2.Qe3#
      • 1...b2+!
  • Keys
    • 1.Rh1!
      • 1...b2+
        • 2.Qxa2#
      • 1...b5
        • 2.Qg1#
      • 1...c2
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);CHECK,N_GUARD::QAR(A),XB(a)
    • P(c);OGATE::QAR(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Vars
        • P(c);OGATE::QAR(A)
        • P(b);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • K(G);P-FLIGHT
      • Vars
        • P(c);OGATE::QAR(A)
        • P(b);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • K(G);P-FLIGHT
      • Vars
        • P(c);OGATE::QAR(A)
        • P(b);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(c);OGATE::QAR(A)
        • P(b);N_GUARD,P_PINB(C)::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(D);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(D);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(D);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • P(b);CHECK,N_GUARD::QAR(A),XB(a)
        • P(c);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR(A)
      • Vars
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);N_PINB(a),XP(c)
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR(A)
      • Vars
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR(A)
      • Vars
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • QAR(A)
      • Refutation
        • P(b);CHECK
  • Actual
    • R(B);
    • Vars
      • P(b);CHECK,N_GUARD::QAR(A),XB(a)
      • P(d);OGATEB::QAB(A)
      • P(c);OGATE::QAR(A)
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