MESON Chess Problem Database

Problem Display
PID: 208460 (8/8/8/5KN1/2Q2p2/8/6k1/7N w - - 0 1)

Kettner, Karl Werner

Deutsche Schachblatter, 1926

8/8/8/5KN1/2Q2p2/8/6k1/7N

#2

4 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1+?
      • 1...Kh2
        • 2.Sf3#
      • 1...Kxf1!
  • Keys
    • 1.Sf3!
      • 1...Kxh1
        • 2.Qf1#
      • 1...Kxf3
        • 2.Qe4#
      • 1...Kh3
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT,XS(A)::QAR2(B)
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
      • K(a);S_FLIGHT::QAB(B)
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