MESON Chess Problem Database

Problem Display
PID: 61760 (1Q6/7b/3p1N2/2P2P1P/K2k2P1/4pBp1/1Np1p3/4b3 w - - 0 1)

Laib, Kurt Friedrich

Schach, 1951

1Q6/7b/3p1N2/2P2P1P/K2k2P1/4pBp1/1Np1p3/4b3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb4#
    • 1...Kxc5
      • 2.Qa7#
    • 1...Ke5
      • 2.Qxd6#
    • 1...Bc3
      • 2.Qxd6#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qxd6#
      • 1...Kd5
        • 2.Qxd6#
      • 1...Ke5
        • 2.Qxd6#
      • 1...dxc5
        • 2.Qd6#
      • 1...d5
        • 2.Qh8#
      • 1...Bg8!
    • 1.Sd7?
      • threat
        • 2.Qh8#
      • 1...Kc3
        • 2.Qb4#
      • 1...Bg8!
    • 1.Qb4+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Bxb4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sd7#
      • 1...Kc3
        • 2.Se4#
      • 1...Kxc5
        • 2.Sd7#
      • 1...Ke5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(f);S_FLIGHT::QAB1(I)
    • K(f);OGATEB,S_FLIGHT,XP(E)::QAB(I)
    • K(f);P_SPINP(g),S_FLIGHT::QAB1(I),XP(g)
    • B(a);SBLOCK::QAR2(I),XP(g)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR2(I),XP(g)
      • Vars
        • K(f);P-FLIGHT::QAR1(I),XP(g)
        • K(f);P_SPINP(g),S_FLIGHT::QAB1(I),XP(g)
        • P(g);XP(E)::QAR2(I)
        • P(g);SBLOCK::QAB(I)
      • Refutation
        • B(h);
    • Try
      • S(H);
      • Threat
        • QAB(I)
      • Vars
        • K(f);S_FLIGHT::QAB1(I)
      • Refutation
        • B(h);
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);S_FLIGHT::S(H)
      • Refutation
        • B(a);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+S(H)
    • Vars
      • K(f);S_FLIGHT::QAB(I)+S(H),DCHECK
      • K(f);S_FLIGHT,XP(E)::S(H)
      • K(f);S_FLIGHT::QAB(I)+S(H)
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