MESON Chess Problem Database

Problem Display
PID: 72867 (B7/1rp5/6p1/8/1n2NpQn/4kP2/3R1N2/3K4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Der Tagesspiegel (Berlin), 1993

B7/1rp5/6p1/8/1n2NpQn/4kP2/3R1N2/3K4

#2

7 + 7

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Rd3#
    • 1...Sc2
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sd5
      • 2.Rd3#
    • 1...Sa6
      • 2.Rd3#
    • 1...Sc6
      • 2.Rd3#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Sf1#
      • 1...fxg3
        • 2.Re2#
        • 2.Qe4#
      • 1...Sd3!
    • 1.Qh3?
      • threat
        • 2.Sg4#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sxf3!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sg5#
      • 1...Kxf3
        • 2.Qh3#
      • 1...Sxf3
        • 2.Sg4#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Rb5
        • 2.Sc5#
      • 1...Rb6
        • 2.Sd6#
      • 1...Sc6
        • 2.Rd3#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::R1(B)
    • S(b);N_GUARD::R1(B),XS(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Refutation
        • S(b);
    • Try
      • Q(F);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD::R1(B),XS(b)
      • Refutation
        • S(d);P_SPINS(d),XP(D)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(E)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(F)
      • S(d);SBLOCK,XP(D)::S(C)
      • S(b);N_GUARD::R1(B),XS(b)
      • R(f);::QAR(F)+S(E)
      • S(b);N_GUARD::R1(B)
      • P(e);::QAR(F)+S(E),XP(e)
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