MESON Chess Problem Database

Problem Display
PID: 90579 (K2kr1q1/1B1Nb2R/N1P2nQ1/7b/7B/8/8/8 w - - 0 1)

Bartel, Erich

Die Schwalbe, 1964

K2kr1q1/1B1Nb2R/N1P2nQ1/7b/7B/8/8/8

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.c7#
    • 1...Bb4
      • 2.c7#
    • 1...Bc5
      • 2.c7#
    • 1...Bf8
      • 2.c7#
    • 1...Sxd7
      • 2.c7#
  • Tries
    • 1.Se5?
      • threat
        • 2.c7#
      • 1...Bd6
        • 2.Rd7#
      • 1...Sd5
        • 2.Qd6#
      • 1...Qc4!
    • 1.Sb6?
      • threat
        • 2.c7#
      • 1...Bd6
        • 2.Rd7#
      • 1...Sd5
        • 2.Qd6#
      • 1...Qc4!
    • 1.Sxf6?
      • threat
        • 2.c7#
      • 1...Bd6
        • 2.Rd7#
      • 1...Qc4!
    • 1.Sdb8?
      • threat
        • 2.c7#
      • 1...Bd6
        • 2.Rd7#
      • 1...Sd5
        • 2.Qd6#
      • 1...Qc4!
  • Keys
    • 1.Sdc5!
      • threat
        • 2.c7#
      • 1...Bd6
        • 2.Rd7#
      • 1...Sd5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(c);P_SPINS(b)::P(C)
    • S(b);P_SPINB(c),SBLOCK,XS(F)::P(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);OGATE,P_SPINS(b)::R1(G)
        • S(b);OGATE,P_SPINB(c)::QAR2(D)
      • Refutation
        • Q(f);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);OGATE,P_SPINS(b)::R1(G)
        • S(b);OGATE,P_SPINB(c)::QAR2(D)
      • Refutation
        • Q(f);
    • Try
      • S(F);XS(b)
      • Threat
        • P(C)
      • Vars
        • B(c);OGATE::R1(G)
      • Refutation
        • Q(f);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • B(c);OGATE,P_SPINS(b)::R1(G)
        • S(b);OGATE,P_SPINB(c)::QAR2(D)
      • Refutation
        • Q(f);
  • Actual
    • S(F);
    • Threat
      • P(C)
    • Vars
      • B(c);OGATE,P_SPINS(b)::R1(G)
      • S(b);OGATE,P_SPINB(c)::QAR2(D)
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Developed and maintained by Brian Stephenson.
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