MESON Chess Problem Database

Problem Display
PID: 86146 (1B3K2/2n5/8/4k3/8/5Q1B/3P4/8 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1968

1B3K2/2n5/8/4k3/8/5Q1B/3P4/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bg2?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qd5#
      • 1...Ke6!
    • 1.Be6?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxe6!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Bxc7#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kxd5!
  • Keys
    • 1.Qd3!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kf6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT,XB(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(D),XS(b)
        • K(a);N_SPINS(b),OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);N_SPINS(b),S_FLIGHT::QAR1(B)
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