MESON Chess Problem Database

Problem Display
PID: 85719 (8/8/8/8/K3PP2/p7/k2B3Q/b1R5 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1968

8/8/8/8/K3PP2/p7/k2B3Q/b1R5

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb2
      • 2.Be3#
    • 1...Bc3
      • 2.Bxc3#
    • 1...Be5
      • 2.Bc3#
    • 1...Bf6
      • 2.Bc3#
    • 1...Bg7
      • 2.Bc3#
    • 1...Bh8
      • 2.Bc3#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qxa3#
        • 2.Qb3#
      • 1...Kb2
        • 2.Qxa3#
        • 2.Qb3#
      • 1...Bb2
        • 2.Qb3#
        • 2.Qg8#
      • 1...Bc3!
    • 1.Qg2?
      • 1...Kb2
        • 2.Be3#
      • 1...Bb2
        • 2.Qg8#
      • 1...Bc3
        • 2.Bxc3#
      • 1...Be5
        • 2.Bc3#
      • 1...Bf6
        • 2.Bc3#
      • 1...Bg7
        • 2.Bc3#
      • 1...Bh8
        • 2.Bc3#
      • 1...Bd4!
    • 1.Qh3?
      • threat
        • 2.Qxa3#
        • 2.Qb3#
      • 1...Kb2
        • 2.Qxa3#
        • 2.Qb3#
      • 1...Bb2
        • 2.Qe6#
        • 2.Qb3#
      • 1...Bc3!
  • Keys
    • 1.Qe2!
      • 1...Kb2
        • 2.Be3#
      • 1...Bb2
        • 2.Qc4#
      • 1...Bc3
        • 2.Bxc3#
      • 1...Bd4
        • 2.Bc3#
      • 1...Be5
        • 2.Bc3#
      • 1...Bf6
        • 2.Bc3#
      • 1...Bg7
        • 2.Bc3#
      • 1...Bh8
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR(C)+B(B)
    • B(a);N_GUARD::QAR(C)+B(B),XB(a)
    • B(a);N_GUARD::QAR(C)+B(B)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAR(C)+B(B)
        • B(a);SBLOCK::QAB(C)
        • B(a);N_GUARD::QAR(C)+B(B),XB(a)
        • B(a);N_GUARD::QAR(C)+B(B)
      • Refutation
        • B(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);
  • Actual
    • Q(C);
    • Vars
      • K(b);P-FLIGHT::QAR(C)+B(B)
      • B(a);SBLOCK::QAB(C)
      • B(a);N_GUARD::QAR(C)+B(B),XB(a)
      • B(a);N_GUARD::QAR(C)+B(B)
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