MESON Chess Problem Database

Problem Display
PID: 15283 (1Kn3B1/4BRpq/N1p5/8/P1k1p3/5p2/8/Q3N3 w - - 0 1)

Muller, Dieter

Wilk, Udo

3rd Place, 02. WCCT, 1980-1983

1Kn3B1/4BRpq/N1p5/8/P1k1p3/5p2/8/Q3N3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Rxf3#
    • 1...Kd5
      • 2.Rf5#
    • 1...Qf5
      • 2.Rxf5#
    • 1...Qh1
      • 2.Rxf3#
      • 2.Rf4#
      • 2.Rf5#
      • 2.Rf6#
      • 2.Rxg7#
      • 2.Rf8#
    • 1...Qh2+
      • 2.Rf4#
    • 1...Qh3
      • 2.Rf5#
    • 1...Qh4
      • 2.Rxf3#
      • 2.Rf4#
      • 2.Rf5#
      • 2.Rf6#
      • 2.Rxg7#
      • 2.Rf8#
    • 1...Qh6
      • 2.Rf6#
    • 1...e3
      • 2.Rf4#
    • 1...g5
      • 2.Rxh7#
    • 1...g6
      • 2.Rxh7#
  • Tries
    • 1.Qc3+?
      • 1...Kd5
        • 2.Sc7#
        • 2.Rf5#
      • 1...Kxc3!
    • 1.Qd4+?
      • 1...Kb3
        • 2.Rxf3#
      • 1...Kxd4!
    • 1.Qc1+?
      • 1...Kb3
        • 2.Qc2#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Qa2#
      • 1...Qh2+
        • 2.Rc7#
      • 1...Kb3
        • 2.Rb7#
      • 1...Kd5
        • 2.Rd7#
      • 1...gxf6
        • 2.Rxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(b);S_FLIGHT::B(H)+R(F),DCHECK,XP(a)
    • K(b);S_FLIGHT::B(H)+R(F),DCHECK
    • Q(f);N_GUARD::B(H)+R(F),XQ(f)
    • Q(f);CHECK,N_GUARD::B(H)+R(F)
    • Q(f);N_GUARD::B(H)+R(F)
    • P(c);::B(H)+R(F),DCHECK
    • P(e);OGATE::B(H)+R(F),XQ(f)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::B(H)+R(F),DCHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • QAB(A)
    • Vars
      • Q(f);CHECK,N_GUARD::B(H)+R(F)
      • K(b);S_FLIGHT::B(H)+R(F),DCHECK
      • P(e);OGATE,XB(E)::B(H)+R(F),XQ(f)
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