MESON Chess Problem Database

Problem Display
PID: 162992 (4Q3/8/1n1ppp1p/4k3/8/3KN1P1/3b4/4R3 w - - 0 1)

Valuska, Jan

Kolnische Rundschau, 1969

4Q3/8/1n1ppp1p/4k3/8/3KN1P1/3b4/4R3

#2

5 + 7

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qb8#
    • 1...f5
      • 2.Qh8#
  • Tries
    • 1.Sc4+?
      • 1...Kd5
        • 2.Qb5#
      • 1...Kf5!
    • 1.Sg4+?
      • 1...Kd5
        • 2.Qb5#
      • 1...Kf5!
    • 1.Rf1?
      • threat
        • 2.Rf5#
      • 1...d5
        • 2.Qb8#
      • 1...f5
        • 2.Rxf5#
        • 2.Qh8#
      • 1...Bxe3!
    • 1.Qc6?
      • threat
        • 2.Qe4#
      • 1...f5
        • 2.Sg4#
      • 1...d5
        • 2.Qc7#
      • 1...Sd5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...d5
        • 2.Sc4#
      • 1...f5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::QAB(E)
    • P(f);OGATEB::QAB(E)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINP(e),P-FLIGHT::QAR2(E)
      • Refutation
        • K(b);N_SPINP(e),P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_SPINP(e),P-FLIGHT::QAR2(E)
      • Refutation
        • K(b);N_SPINP(e),P-FLIGHT
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • P(d);OGATEB::QAB(E)
      • Refutation
        • B(a);XS(C)
    • Try
      • Q(E);N_PINP(e)
      • Threat
        • QAR1(E)
      • Vars
        • P(f);SBLOCK::R(A)+S(C),DCHECK
        • P(d);OGATEB::QAB(E)
      • Refutation
        • S(c);
  • Actual
    • Q(E);N_PINP(e)
    • Threat
      • QAR1(E)
    • Vars
      • P(d);SBLOCK::R(A)+S(C),DCHECK
      • P(f);OGATEB::QAB(E)
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