MESON Chess Problem Database

Problem Display
PID: 18944 (1K3b2/2R3p1/6Q1/P6b/3kP3/3ppP2/3N4/8 w - - 0 1)

Giegold, Fritz Emil

Schach-Echo, 1959

1K3b2/2R3p1/6Q1/P6b/3kP3/3ppP2/3N4/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.Sxf3#
    • 1...Ba3
      • 2.Qxg7#
    • 1...Bb4
      • 2.Qxg7#
    • 1...Bc5
      • 2.Qxg7#
    • 1...Bd6
      • 2.Qxd6#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qa1#
      • 1...Ba3
        • 2.Qxg7#
      • 1...Bb4
        • 2.Qxg7#
      • 1...Ke5!
    • 1.Qb6+?
      • 1...Bc5
        • 2.Qxc5#
        • 2.Qb2#
      • 1...Ke5!
    • 1.f4?
      • threat
        • 2.Sb3#
        • 2.Rc4#
      • 1...Bxg6
        • 2.Rc4#
      • 1...Bc5
        • 2.Qxg7#
      • 1...e2
        • 2.Qg1#
      • 1...Bd1
        • 2.Rc4#
      • 1...Bd6
        • 2.Sb3#
        • 2.Qxd6#
      • 1...exd2!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Sb3#
      • 1...Bd6+
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Bxc5
        • 2.Qxg7#
      • 1...exd2
        • 2.Qg1#
      • 1...e2
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(d);XP(B)::S(A),XB(d)
    • B(f);N_GUARD::QAB(E),XP(e)
    • B(f);N_GUARD,P_PINR(F)::QAR2(E),XB(f)
  • Tries
    • Try
      • Q(E);P_PINP(b)
      • Threat
        • QAB(E)
      • Vars
        • B(f);N_GUARD::QAB(E),XP(e)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XQ(E)::R1(F)
        • B(f);N_GUARD::QAB(E),XP(e)
        • P(b);OGATEB::QAB(E)
        • B(d);::R1(F)
      • Refutation
        • P(b);XS(A)
  • Actual
    • R(F);
    • Threat
      • S(A)
    • Vars
      • B(f);CHECK,N_GUARD::QAR2(E),XB(f)
      • K(c);OGATEB,S_FLIGHT,XR(F)::QAB1(E)
      • B(f);N_GUARD,SBLOCK,XR(F)::QAB(E),XP(e)
      • P(b);OGATEB,XS(A)::QAB(E)
      • P(b);OGATEB::QAB(E)
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