MESON Chess Problem Database

Problem Display
PID: 185304 (4B1Q1/8/3p4/K1k4r/p1p4p/2B5/4p1b1/6q1 w - - 0 1)

Braun, Georges

Basler Nachrichten, 1977

4B1Q1/8/3p4/K1k4r/p1p4p/2B5/4p1b1/6q1

#2

4 + 9

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Bb4#
    • 1...Bd5
      • 2.Qxg1#
    • 1...d5
      • 2.Qf8#
  • Tries
    • 1.Qg5+?
      • 1...Bd5
        • 2.Qxg1#
      • 1...d5
        • 2.Qe7#
      • 1...Rxg5!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Qxc4#
      • 1...d5
        • 2.Qf8#
      • 1...Qd4
        • 2.Bb4#
      • 1...Rd5
        • 2.Qc8#
      • 1...Bd5
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);SBLOCK::B(A)
    • B(c);OGATE,SBLOCK::QAB(D),XQ(a)
    • P(i);OGATEB,SBLOCK::QAB(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • B(c);OGATE,P_SPINB(c),SBLOCK::QAB(D),XQ(a)
        • P(i);OGATEB,P_SPINP(i),SBLOCK::QAB(D)
      • Refutation
        • R(h);XQ(D)
  • Actual
    • B(C);
    • Threat
      • QAR1(D),XP(e)
    • Vars
      • P(i);OGATEB,SBLOCK::QAB(D)
      • Q(a);SBLOCK::B(A)
      • R(h);SBLOCK,S_CUTB(c)::QAR(D)
      • B(c);OGATE,SBLOCK::QAB(D),XQ(a)
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