MESON Chess Problem Database

Problem Display
PID: 28352 (2Q5/8/N2pp1P1/8/3k1N2/3B1K2/2P5/b7 w - - 0 1)

Laib, Kurt Friedrich

Kieler Schachgesellschaft, 1980

2Q5/8/N2pp1P1/8/3k1N2/3B1K2/2P5/b7

#2

7 + 4

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993
3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qh8#
    • 1...e5
      • 2.Qc4#
  • Tries
    • 1.Qb7?
      • 1...Kc3
        • 2.Qb4#
      • 1...Ke5
        • 2.Qg7#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qe4#
      • 1...e5
        • 2.Se2#
        • 2.Qb4#
      • 1...d5!
    • 1.Qc7?
      • 1...Ke5
        • 2.Qg7#
      • 1...Bc3
        • 2.Qxd6#
      • 1...d5
        • 2.Se2#
        • 2.Sxe6#
      • 1...e5
        • 2.Qc4#
      • 1...Bb2!
    • 1.c3+?
      • 1...Ke5
        • 2.Qxe6#
        • 2.Qh8#
      • 1...Bxc3!
  • Keys
    • 1.Qb8!
      • 1...Kc3
        • 2.Qb4#
      • 1...Ke5
        • 2.Qh8#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qxd6#
      • 1...d5
        • 2.Se2#
      • 1...e5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(G)
    • P(d);SBLOCK::QAR1(G)
  • Tries
    • Try
      • Q(G);
      • Vars
        • K(b);S_FLIGHT::QAB1(G)
        • K(b);S_FLIGHT::QAB(G)
        • B(a);N_GUARD::QAB(G),XB(a)
        • B(a);SBLOCK::QAR1(G)
      • Refutation
        • P(c);
    • Try
      • Q(G);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB(G)
        • B(a);SBLOCK::QAR2(G),XP(c)
        • P(d);SBLOCK::QAR1(G)
      • Refutation
        • B(a);
    • Try
      • P(A);CHECK
      • Refutation
        • B(a);XP(A)
  • Actual
    • Q(G);
    • Vars
      • K(b);S_FLIGHT::QAB1(G)
      • K(b);P_SPINP(c),S_FLIGHT::QAB(G)
      • B(a);N_GUARD::QAB(G),XB(a)
      • B(a);SBLOCK::QAR2(G),XP(c)
      • P(c);SBLOCK::S(D)
      • P(d);SBLOCK::QAR2(G)
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