MESON Chess Problem Database

Problem Display
PID: 242657 (b7/K1p5/QB3Pp1/8/2N1k3/2P2R2/1n3P2/7B w - - 0 1)

Gockel, Hubert

Schach-Aktiv, 2007

b7/K1p5/QB3Pp1/8/2N1k3/2P2R2/1n3P2/7B

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Re3#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Rf4#
      • 1...Bd5
        • 2.Qg4#
      • 1...Sd3
        • 2.Rf5#
      • 1...Sxc4!
  • Keys
    • 1.Bxc7!
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Rf5#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Bd5
        • 2.Sd2#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Sd3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)+R(D)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • K(b);S_FLIGHT::B(A)+R(D)
        • B(e);SBLOCK::QAR2(F)
        • S(a);SBLOCK::B(A)+R(D)
      • Refutation
        • S(a);XS(E)
  • Actual
    • B(G);XP(d)
    • Threat
      • QAR2(F)
    • Vars
      • K(b);S_FLIGHT::B(A)+R(D),DCHECK
      • S(a);OGATE,XS(E)::QAR2(F),XS(a)
      • B(e);SBLOCK::S(E)
      • B(e);N_GUARD::QAB(F),XB(e)
      • S(a);SBLOCK::B(A)+R(D),DCHECK
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