MESON Chess Problem Database

Problem Display
PID: 90528 (8/4BK2/3PP3/4k3/2Q5/8/8/8 w - - 0 1)

Ahlheim, Karl-Heinz

Die Schwalbe, 1985

8/4BK2/3PP3/4k3/2Q5/8/8/8

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Bh4?
      • 1...Kxd6
        • 2.Bg3#
      • 1...Kf5!
    • 1.Bd8?
      • 1...Kxd6
        • 2.Bc7#
      • 1...Kf5!
  • Keys
    • 1.Bg5!
      • 1...Kf5
        • 2.Qf4#
      • 1...Kxd6
        • 2.Bf4#

Anticipated by 67404(1978)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT,XP(B)::B(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(B)::B(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XP(B)::B(D)
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