MESON Chess Problem Database

Problem Display
PID: 159294 (4nB2/K1N1P2r/3k2N1/3P1b2/BP3R2/6R1/7Q/n3r3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 1962

4nB2/K1N1P2r/3k2N1/3P1b2/BP3R2/6R1/7Q/n3r3

#2

11 + 6

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.e8S#
    • 1...Sg7
      • 2.e8S#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Sxe8#
      • 1...Kxc7
        • 2.Rc3#
      • 1...Rexe7
        • 2.Rh3#
      • 1...Rhxe7
        • 2.Re3#
      • 1...Bxg6
        • 2.Rxg6#
      • 1...Sxc7
        • 2.e8S#
      • 1...Sf6
        • 2.e8S#
      • 1...Sg7
        • 2.e8S#
      • 1...Bd7!
    • 1.Rxf5?
      • threat
        • 2.Sxe8#
      • 1...Kxc7
        • 2.Rc3#
      • 1...Rexe7
        • 2.Rh3#
      • 1...Rhxe7
        • 2.Re3#
      • 1...Sxc7
        • 2.e8S#
      • 1...Sf6
        • 2.e8S#
      • 1...Sg7
        • 2.e8S#
      • 1...Re5!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sxe8#
      • 1...Kxc7
        • 2.Rc4#
      • 1...Rexe7
        • 2.Rh4#
      • 1...Rhxe7
        • 2.Re4#
      • 1...Bxd3
        • 2.Rf6#
      • 1...Bxg6
        • 2.Rf6#
      • 1...Sxc7
        • 2.e8S#
      • 1...Bd7
        • 2.Rf6#
      • 1...Sf6
        • 2.e8S#
      • 1...Sg7
        • 2.e8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE::P=S
  • Tries
    • Try
      • R(E);
      • Threat
        • S(I),XS(f)
      • Vars
        • K(d);S_FLIGHT,XS(I)::QAB(A)+R(B),DCHECK
        • R(b);N_GUARD,P_PINS(I),P_SPINR(b),XP(J)::QAB(A)+R(B)
        • R(e);N_GUARD,P_PINS(I),P_SPINR(e),XP(J)::QAB(A)+R(B)
        • B(c);OGATE,XS(G)::QAB(A)+R(B),DCHECK,XB(c)
        • S(f);OGATE,XS(I)::P=S
        • S(f);OGATE::P=S
      • Refutation
        • B(c);
    • Try
      • R(E);XB(c)
      • Threat
        • S(I),XS(f)
      • Vars
        • K(d);S_FLIGHT,XS(I)::QAB(A)+R(B),DCHECK
        • R(b);N_GUARD,P_PINS(I),P_SPINR(b),XP(J)::QAB(A)+R(B)
        • R(e);N_GUARD,P_PINS(I),P_SPINR(e),XP(J)::QAB(A)+R(B)
        • S(f);OGATE,XS(I)::P=S
        • S(f);OGATE::P=S
      • Refutation
        • R(b);
  • Actual
    • R(B);
    • Threat
      • S(I),XS(f)
    • Vars
      • K(d);S_FLIGHT,XS(I)::QAB(A)+R(E),DCHECK
      • R(b);N_GUARD,P_PINS(I),P_SPINR(b),XP(J)::QAB(A)+R(E)
      • R(e);N_GUARD,P_PINS(I),P_SPINR(e),XP(J)::QAB(A)+R(E)
      • B(c);OGATE,XR(B)::QAB(A)+R(E),DCHECK
      • B(c);OGATE,XS(G)::QAB(A)+R(E),DCHECK
      • S(f);OGATE,XS(I)::P=S
      • B(c);OGATE::QAB(A)+R(E),DCHECK
      • S(f);OGATE::P=S
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