MESON Chess Problem Database

Problem Display
PID: 85786 (8/8/7n/8/8/4N3/K4QPk/8 w - - 0 1)

Speckmann, Werner

Schach-Report/Deutsche Schachblatter, 1989

8/8/7n/8/8/4N3/K4QPk/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Kh1
        • 2.Qf1#
      • 1...Sxg4!
    • 1.g4+?
      • 1...Kh1
        • 2.Qg2#
      • 1...Kh3!
  • Keys
    • 1.g3+!
      • 1...Kh1
        • 2.Qg2#
      • 1...Kh3
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • S(b);XS(D)
    • Try
      • P(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(C);CHECK
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
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