MESON Chess Problem Database

Problem Display
PID: 148340 (2N1R3/8/4pN2/4k1P1/2nnB1K1/1b1rp3/2Qb4/B7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

1st HM., Neue Zurcher Zeitung, 2006-2007

2N1R3/8/4pN2/4k1P1/2nnB1K1/1b1rp3/2Qb4/B7

#2

8 + 8

23 Die Schwalbe 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sd7#
    • 1...Bc1
      • 2.Qh2#
    • 1...Bc3
      • 2.Qh2#
    • 1...Bb4
      • 2.Qh2#
    • 1...Ba5
      • 2.Qh2#
    • 1...Sb2
      • 2.Qc7#
    • 1...Sa3
      • 2.Qc7#
    • 1...Sa5
      • 2.Qc7#
    • 1...Sb6
      • 2.Qc7#
  • Tries
    • 1.Bh1?
      • threat
        • 2.Sd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Ba4!
    • 1.Bg2?
      • threat
        • 2.Sd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Ba4!
    • 1.Bf3?
      • threat
        • 2.Sd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Ba4!
    • 1.Bf5?
      • threat
        • 2.Rxe6#
      • 1...Rc3
        • 2.Qe4#
      • 1...Bc3
        • 2.Qh2#
      • 1...Sb2
        • 2.Qc7#
      • 1...Sa3
        • 2.Qc7#
      • 1...Sa5
        • 2.Qc7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Sd6!
    • 1.Bb7?
      • threat
        • 2.Sd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Ba4!
    • 1.Ba8?
      • threat
        • 2.Sd7#
      • 1...Sb6
        • 2.Qc7#
      • 1...Ba4!
    • 1.Qxd3?
      • threat
        • 2.Sd7#
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Bc3
        • 2.Sd7#
      • 1...Ba4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Sb2
        • 2.Sd7#
      • 1...Sb6
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Bd1+!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Rxe6#
      • 1...Rc3
        • 2.Qe4#
      • 1...Bc3
        • 2.Qh2#
      • 1...Sb2
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(c);N_SPINS(f)::S(F)
    • B(a);OGATE::QAB(B)
    • B(a);N_SPINS(f),OGATE::QAB(B)
    • S(e);N_SPINS(f),OGATE::QAB(B)
    • S(e);OGATE::QAB(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATE::QAB(B)
      • Refutation
        • B(b);
    • Try
      • B(C);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATE::QAB(B)
      • Refutation
        • B(b);
    • Try
      • B(C);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATE::QAB(B)
      • Refutation
        • B(b);
    • Try
      • B(C);
      • Threat
        • R1(H),XP(h)
      • Vars
        • R(c);N_SPINS(f),OGATE::QAR1(B)
        • B(a);N_SPINS(f),OGATE::QAB(B)
        • S(e);N_SPINS(f),OGATE::QAB(B)
        • S(e);OGATE::QAB(B)
      • Refutation
        • S(e);
    • Try
      • B(C);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATE::QAB(B)
      • Refutation
        • B(b);
    • Try
      • B(C);
      • Threat
        • S(F)
      • Vars
        • S(e);OGATE::QAB(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);XR(c)
      • Threat
        • DUALS(3)
      • Vars
        • B(a);N_SPINS(f)::S(F)
        • S(e);N_SPINS(f)::S(F)
      • Refutation
        • B(b);CHECK
  • Actual
    • B(C);
    • Threat
      • R1(H),XP(h)
    • Vars
      • R(c);N_SPINS(f),OGATE::QAR1(B)
      • B(a);N_SPINS(f),OGATE::QAB(B)
      • S(e);N_SPINS(f),OGATE::QAB(B)
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