MESON Chess Problem Database

Problem Display
PID: 46515 (8/3p1Br1/3p4/1R3P2/r3k3/1R5N/N1p1P3/QbK2n1n w - - 0 1)

Ahues, Herbert Siegfried Oskar

1/2 Prize, Schweizerische Arbeiter Schachzeitung, 1961

8/3p1Br1/3p4/1R3P2/r3k3/1R5N/N1p1P3/QbK2n1n

#2

9 + 9

3749 FIDE Album (1959-1961) 1966
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf3?
      • threat
        • 2.Bd5#
      • 1...Rxf7
        • 2.Sg5#
      • 1...Rd4
        • 2.Sc3#
      • 1...Se3
        • 2.Rf4#
      • 1...d5
        • 2.Bxd5#
      • 1...Bxa2!
    • 1.R5b4+?
      • 1...Kxf5
        • 2.Rf3#
      • 1...Rxb4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Bd5#
      • 1...Rxf7
        • 2.Qh4#
      • 1...Rd4
        • 2.Qe7#
      • 1...Se3
        • 2.Sc3#
      • 1...d5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • B(I)
      • Vars
        • R(i);N_GUARD,XB(I)::S(F)
        • R(e);SBLOCK::S(C)
        • S(b);SBLOCK::R1(E)
        • P(g);::B(I),XP(g)
      • Refutation
        • B(a);XS(C)
    • Try
      • R(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XP(H)::R(E)
      • Refutation
        • R(e);XR(G)
  • Actual
    • Q(A);
    • Threat
      • B(I)
    • Vars
      • R(i);N_GUARD,XB(I)::QAR(A)
      • R(e);SBLOCK::QAR(A)
      • S(b);SBLOCK::S(C)
      • P(g);::B(I),XP(g)
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