MESON Chess Problem Database

Problem Display
PID: 274585 (2N5/1p4K1/1P1P4/kp6/p2B4/3B4/8/Q7 w - - 0 1)

Nagler, Alois

Die Tat, 1943

(First published on Sat Feb 13 1943)

2N5/1p4K1/1P1P4/kp6/p2B4/3B4/8/Q7

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qc3#
    • 1...Ka6
      • 2.Qxa4#
    • 1...a3
      • 2.Qxa3#
  • Tries
    • 1.Kf6?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kg6?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kh6?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kf7?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kh7?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kf8?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kg8?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Kh8?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Sa7?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Se7?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Bf1?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Bc2?
      • 1...Kb4
        • 2.Qc3#
      • 1...b4
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...Ka6!
    • 1.Be2?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Bg1?
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qe5#
      • 1...Kb4!
    • 1.Bf2?
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qe5#
      • 1...Kb4!
    • 1.Bc3+?
      • 1...Ka6
        • 2.Qxa4#
      • 1...b4!
    • 1.Be3?
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qe5#
      • 1...Kb4!
    • 1.Bc5?
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Be5?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
    • 1.Qb2?
      • threat
        • 2.Qxb5#
      • 1...Ka6
        • 2.Qxb5#
      • 1...b4!
    • 1.Qc3+?
      • 1...b4
        • 2.Qc5#
      • 1...Ka6!
    • 1.Qb1?
      • threat
        • 2.Qxb5#
      • 1...Ka6
        • 2.Qxb5#
      • 1...b4!
    • 1.Qc1?
      • 1...Kb4
        • 2.Qc3#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qg5#
        • 2.Qc5#
      • 1...Ka6!
    • 1.Qe1+?
      • 1...b4
        • 2.Qe5#
      • 1...Ka6!
    • 1.Qa2?
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Qa3?
      • 1...Ka6
        • 2.Qxa4#
      • 1...b4!
    • 1.Qxa4+?
      • 1...bxa4
        • 2.Bc3#
      • 1...Kxa4!
    • 1.d7?
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4!
  • Keys
    • 1.Bf6!
      • 1...Kb4
        • 2.Qc3#
      • 1...Ka6
        • 2.Qxa4#
      • 1...a3
        • 2.Qxa3#
      • 1...b4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
    • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • S(G);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • S(G);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • P(c);N_GUARD::QAR1(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • P(c);OGATEB,P_SPINP(c)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAB1(A),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • K(b);N_GUARD,S_CUTP(c),S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAR(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • P(c);SBLOCK,XQ(A)::B(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • P(E);
      • Vars
        • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
  • Actual
    • B(C);
    • Vars
      • K(b);N_GUARD,N_SPINP(a),S_CUTP(c),S_FLIGHT::QAB1(A)
      • K(b);N_GUARD,P-FLIGHT,S_CUTP(c)::QAR2(A),XP(a)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);OGATEB,SBLOCK::QAR(A)
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