MESON Chess Problem Database

Problem Display
PID: 210432 (8/8/3pp3/8/3k4/3N1K2/4P3/2Q5 w - - 0 1)

Swillus, Horst

Deutsche Schachblatter, 1929

8/8/3pp3/8/3k4/3N1K2/4P3/2Q5

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qc5#
  • Tries
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Kc3!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Sb4#
        • 2.Sf4#
        • 2.e4#
      • 1...Kxc3!
    • 1.Qc6?
      • 1...d5
        • 2.Qc5#
      • 1...e5!
  • Keys
    • 1.Sb4!
      • 1...Ke5
        • 2.Qf4#
      • 1...d5
        • 2.Sc6#
      • 1...e5
        • 2.e3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(b);N_GUARD::QAB1(A)
      • Refutation
        • P(c);
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);SBLOCK::S(C)
      • P(c);SBLOCK::P(B)
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