MESON Chess Problem Database

Problem Display
PID: 197083 (4B1KB/4RpN1/3P4/b6R/2pk4/3p4/5nq1/2Q5 w - - 0 1)

Schenk, Manfred

Sachsische Zeitung, 2001

(First published on Sat Dec 8 2001)

4B1KB/4RpN1/3P4/b6R/2pk4/3p4/5nq1/2Q5

#2

8 + 7

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Se6#
    • 1...Bc3
      • 2.Qe3#
  • Tries
    • 1.Qb2+?
      • 1...Bc3
        • 2.Qb6#
      • 1...c3!
    • 1.Qa1+?
      • 1...Bc3
        • 2.Qa7#
      • 1...c3!
  • Keys
    • 1.Bxf7!
      • threat
        • 2.Qxc4#
      • 1...Qa8+
        • 2.Se8#
      • 1...Qxg7+
        • 2.Bxg7#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Qe4
        • 2.Se6#
      • 1...Qc6
        • 2.Se8#
      • 1...Bc3
        • 2.Qe3#
      • 1...Se4
        • 2.Rd5#
      • 1...c3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINS(E),SBLOCK::B(H)+S(E),DCHECK
    • B(f);SBLOCK::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f),SBLOCK::QAB(A)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);OGATE,P_SPINB(f),SBLOCK::QAB(A)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • B(F);XP(g)
    • Threat
      • QAR1(A),XP(d)
    • Vars
      • Q(b);CHECK,N_PINS(E)::B(H)+S(E)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(E)::B(H),XQ(b)
      • Q(b);N_GUARD,N_PINS(E),P_PINB(F)::R1(B),XQ(b)
      • Q(b);N_PINS(E),SBLOCK::B(H)+S(E),DCHECK
      • Q(b);N_PINS(E)::B(H)+S(E)
      • B(f);SBLOCK::QAB1(A)
      • S(a);S_CUTQ(b)::R1(B)
      • P(d);SBLOCK::QAB1(A)
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