MESON Chess Problem Database

Problem Display
PID: 107143 (8/1B4b1/Rp4rq/1k3N2/1P1p3Q/P2Pp3/8/K2n4 w - - 0 1)

Kratschmer, Ralf

Mannheimer Morgen, 1982

8/1B4b1/Rp4rq/1k3N2/1P1p3Q/P2Pp3/8/K2n4

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Sxd4#
    • 1...Bf6
      • 2.Sd6#
    • 1...Bf8
      • 2.Sxd4#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sxd4#
        • 2.Sd6#
      • 1...Rxf6
        • 2.Sxd4#
      • 1...Bxf6
        • 2.Sd6#
      • 1...Qh2
        • 2.Sxd4#
      • 1...Qh4
        • 2.Sd6#
      • 1...Rg4
        • 2.Sd6#
      • 1...Bf8
        • 2.Sxd4#
      • 1...Qf4!
  • Keys
    • 1.Qxd4!
      • threat
        • 2.a4#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Sb2
        • 2.Qd5#
      • 1...Sc3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(f);S_CUTB(h)::S(F),XP(c)
    • B(h);S_CUTR(f)::S(F)
    • B(h);N_GUARD::S(F),XP(c)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XQ(E)::S(F),XP(c)
        • B(h);XQ(E)::S(F)
        • Q(g);::S(F),XP(c)
        • Q(g);::S(F)
        • R(f);::S(F)
        • B(h);::S(F),XP(c)
      • Refutation
        • Q(g);
  • Actual
    • Q(E);P_SPINQ(E),XP(c)
    • Threat
      • P(B)
    • Vars
      • B(h);CHECK,XQ(E)::S(F),XB(h)
      • S(a);N_PINQ(E)::QAR2(E)
      • S(a);N_PINQ(E)::QAB1(E)
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Developed and maintained by Brian Stephenson.
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