MESON Chess Problem Database

Problem Display
PID: 170468 (Q6B/8/8/8/3p4/3k4/2N3P1/3K4 w - - 0 1)

Reimann, Friedrich

Basler Nachrichten, 1946

Q6B/8/8/8/3p4/3k4/2N3P1/3K4

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kc3!
    • 1.Qa3+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc4!
  • Keys
    • 1.Se3!
      • 1...Kc3
        • 2.Qa3#
      • 1...Kxe3
        • 2.Qf3#
      • 1...dxe3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR2(D)
      • K(a);OGATEB,P-FLIGHT,XS(B)::QAR1(D)
      • P(b);OGATEB,SBLOCK,XS(B)::QAR2(D)
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