MESON Chess Problem Database

Problem Display
PID: 10737 (3Q4/3B4/3k4/8/4K3/8/8/8 w - - 0 1)

Speckmann, Werner

Stella Polaris, 1967

3Q4/3B4/3k4/8/4K3/8/8/8

#2

3 + 1

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bb5+?
      • 1...Ke6
        • 2.Bc4#
      • 1...Kc5!
    • 1.Be8+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6!
  • Keys
    • 1.Ba4+!
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6
        • 2.Bb3#

This anticipates 10738(1967)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::B(B)
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