MESON Chess Problem Database

Problem Display
PID: 159931 (4Q3/5pRK/7p/3N1k2/8/8/2pB4/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 1968

4Q3/5pRK/7p/3N1k2/8/8/2pB4/8

#2

5 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Rg5#
  • Tries
    • 1.Se3+?
      • 1...Kf6
        • 2.Bc3#
      • 1...Kf4!
    • 1.Bc1?
      • 1...h5
        • 2.Rg5#
      • 1...f6!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Rxf7#
      • 1...f6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::R1(C)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • P(c);N_GUARD::R1(C)
      • Refutation
        • P(d);
  • Actual
    • Q(E);
    • Threat
      • R(C),XP(d)
    • Vars
      • P(d);SBLOCK::S(B)
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