MESON Chess Problem Database

Problem Display
PID: 72912 (1B6/2q4B/8/p2P1R2/2p1k3/5n2/K1P2Q2/5b2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Der Tagesspiegel (Berlin), 1993

1B6/2q4B/8/p2P1R2/2p1k3/5n2/K1P2Q2/5b2

#2

7 + 6

4780 Der Tagesspiegel (Berlin) 1994
6113 Problemschach-Jahrbuch (1993) 1994
6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Rh5#
    • 1...Qg3
      • 2.Rg5#
    • 1...Qf4
      • 2.Re5#
    • 1...Qd8
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qc5
      • 2.Rg5#
      • 2.Rh5#
  • Tries
    • 1.Bxc7?
      • threat
        • 2.Rg5#
        • 2.Rh5#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sd4
        • 2.Re5#
        • 2.Qf4#
      • 1...Sh4
        • 2.Re5#
        • 2.Qf4#
      • 1...Sg5
        • 2.Re5#
        • 2.Rxg5#
        • 2.Qf4#
      • 1...Bh3!
  • Keys
    • 1.c3!
      • threat
        • 2.Qxf3#
      • 1...Kd3
        • 2.Rxf3#
      • 1...Se5
        • 2.Qd4#
      • 1...Qh2
        • 2.Rh5#
      • 1...Qg3
        • 2.Rg5#
      • 1...Qf4
        • 2.Re5#
      • 1...Be2
        • 2.Qxe2#
      • 1...Bg2
        • 2.Qe2#
      • 1...Se1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sh2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sg5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD::B(F)+R(E)
    • Q(f);SBLOCK::B(F)+R(E),DCHECK
  • Tries
    • Try
      • B(G);XQ(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::B(F)+R(E),DCHECK,XS(b)
      • Refutation
        • B(a);
  • Actual
    • P(B);
    • Threat
      • QAB1(C),XS(b)
    • Vars
      • K(d);S_FLIGHT::B(F)+R(E),DCHECK,XS(b)
      • S(b);N_GUARD::QAR1(C)
      • Q(f);N_GUARD,P_PINQ(C)::B(F)+R(E)
      • Q(f);N_GUARD::B(F)+R(E)
      • Q(f);SBLOCK::B(F)+R(E),DCHECK
      • B(a);N_GUARD::QAR2(C),XB(a)
      • B(a);N_GUARD::QAR2(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
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