MESON Chess Problem Database

Problem Display
PID: 163076 (3b3n/6p1/R4p2/4P2k/8/1Q1BBK2/6N1/7n w - - 0 1)

Ahues, Herbert Siegfried Oskar

Landeszeitung fur die Luneburger Heide, 1995

(First published on Sat Jan 21 1995)

3b3n/6p1/R4p2/4P2k/8/1Q1BBK2/6N1/7n

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qf7+?
      • 1...Sg6
        • 2.Bxg6#
        • 2.Qxg6#
      • 1...g6
        • 2.Qh7#
      • 1...Sxf7!
    • 1.Qg8?
      • threat
        • 2.Qh7#
        • 2.Qxh8#
      • 1...Sg6
        • 2.Qh7#
      • 1...Sf7!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxh1#
      • 1...fxe5
        • 2.Ke4#
      • 1...Sf2
        • 2.Kxf2#
      • 1...Sg3
        • 2.Kxg3#
      • 1...Sg6
        • 2.Ke4#
      • 1...f5
        • 2.Kf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • P(d);OGATE,P_SPINP(d)::QAR2(B)
      • Refutation
        • S(f);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::QAR2(B)
      • Refutation
        • S(f);
  • Actual
    • Q(B);
    • Threat
      • QAR(B),XS(a)
    • Vars
      • P(c);XP(F)::QAB(B)+K(E)
      • S(a);::QAB(B)+K(E),XS(a)
      • S(f);SBLOCK::QAB(B)+K(E)
      • P(c);::QAB(B)+K(E)
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