MESON Chess Problem Database

Problem Display
PID: 10623 (5K2/3k4/Q3N1p1/8/6B1/8/8/2q5 w - - 0 1)

Speckmann, Werner

5th Sp. Mention, Molodoi Leninets, 1966-1967

5K2/3k4/Q3N1p1/8/6B1/8/8/2q5

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sf4+?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sc5+?
      • 1...Kd8
        • 2.Qc8#
        • 2.Qa5#
        • 2.Qb6#
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sg5+?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sc7+?
      • 1...Kd8
        • 2.Qc8#
        • 2.Qd6#
      • 1...Kxc7!
    • 1.Sg7+?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Sd8+?
      • 1...Kxd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Qb7+?
      • 1...Qc7
        • 2.Qxc7#
      • 1...Kd6!
    • 1.Qd6+?
      • 1...Kc8
        • 2.Sc5#
        • 2.Sd8#
      • 1...Kxd6!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Sd4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sg7#
        • 2.Sd8#
      • 1...Qa3+
        • 2.Sc5#
      • 1...Qf4+
        • 2.Sxf4#
      • 1...Qh6+
        • 2.Sg7#
      • 1...Qf1+
        • 2.Sf4#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qc8+
        • 2.Sd8#
      • 1...Kc8
        • 2.Sd4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sg7#
        • 2.Sd8#
      • 1...Qc6
        • 2.Qd8#
      • 1...Qe3
        • 2.Sc5#
        • 2.Qc7#
      • 1...Qg5
        • 2.Sc5#
        • 2.Sxg5#
        • 2.Qc7#
      • 1...Qb1
        • 2.Sc5#
        • 2.Qc7#
      • 1...Qd1
        • 2.Sc5#
        • 2.Qc7#
      • 1...Qe1
        • 2.Sc5#
        • 2.Qc7#
      • 1...Qg1
        • 2.Sc5#
        • 2.Qc7#
      • 1...Qc2
        • 2.Sc5#
      • 1...Qc4
        • 2.Sc5#
      • 1...Qc7
        • 2.Qxc7#
      • 1...g5
        • 2.Sd4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sxg5#
        • 2.Sg7#
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT,XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(B),XQ(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(6)
    • Vars
      • Q(a);CHECK::B(A)+S(C),DCHECK
      • Q(a);CHECK::B(A)+S(C),XQ(a)
      • Q(a);CHECK::B(A)+S(C)
      • Q(a);CHECK::B(A)+S(C),DCHECK,XQ(a)
      • Q(a);CHECK,SBLOCK::B(A)+S(C)
      • Q(a);SBLOCK::QAR1(B)
      • Q(a);::B(A)+S(C),DCHECK
      • Q(a);N_GUARD::QAR1(B),XQ(a)
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