MESON Chess Problem Database

Problem Display
PID: 132766 (8/4B2q/8/2pb4/R1n1n1R1/p1k1pN2/3pB3/K2Q4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1999

8/4B2q/8/2pb4/R1n1n1R1/p1k1pN2/3pB3/K2Q4

#2

7 + 9

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Rxc4#
    • 1...Bb7
      • 2.Rxc4#
    • 1...Ba8
      • 2.Rxc4#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Bb4#
        • 2.Bd4#
      • 1...Qa7
        • 2.Bb4#
      • 1...Qb7
        • 2.Bd4#
      • 1...Qe7
        • 2.Bd4#
      • 1...Qg7
        • 2.Bb4#
      • 1...Qh8
        • 2.Bb4#
      • 1...Sxc5!
    • 1.Bf6+?
      • 1...Se5
        • 2.Bxe5#
      • 1...Sxf6!
    • 1.Rxa3+?
      • 1...Kb4
        • 2.Qb3#
        • 2.Qa4#
      • 1...Sxa3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sb5#
      • 1...Kxd4
        • 2.Bf6#
      • 1...cxd4
        • 2.Bb4#
      • 1...Bc6
        • 2.Rxc4#
      • 1...Scd6
        • 2.Qc2#
      • 1...Sed6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::R1(E),XS(e)
  • Tries
    • Try
      • B(G);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);::B(G)
      • Refutation
        • S(f);XB(G)
    • Try
      • B(G);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(G),XS(e)
      • Refutation
        • S(f);XB(G)
    • Try
      • R(E);CHECK,XP(b)
      • Refutation
        • S(e);XR(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,P_SPINP(a),P_SPINS(e),S_FLIGHT,XS(D)::B(G)
      • P(g);OGATE,SBLOCK,XS(D)::B(G)
      • B(h);N_GUARD::R1(E),XS(e)
      • S(e);::QAR1(B)
      • S(f);::QAR1(B)
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