MESON Chess Problem Database

Problem Display
PID: 52783 (8/7R/8/b1P5/8/4B2K/8/2Q1q2k w - - 0 1)

Fust, Wilhelm

Schach-Echo, 1933

8/7R/8/b1P5/8/4B2K/8/2Q1q2k

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Kg3#
    • 1...Qd1
      • 2.Kg3#
    • 1...Qf1+
      • 2.Kg3#
      • 2.Qxf1#
    • 1...Qg1
      • 2.Qxg1#
    • 1...Bb6
      • 2.Qxe1#
    • 1...Bc7
      • 2.Qxe1#
    • 1...Bd8
      • 2.Qxe1#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qe4#
        • 2.Qb7#
      • 1...Qf1+
        • 2.Kg3#
        • 2.Qxf1#
      • 1...Qd1
        • 2.Kg3#
      • 1...Qg1
        • 2.Qxg1#
      • 1...Bb4
        • 2.Qe4#
      • 1...Bb6
        • 2.Qe4#
        • 2.Qxe1#
      • 1...Qxb1!
    • 1.Qd1?
      • threat
        • 2.Qf3#
        • 2.Qd5#
      • 1...Qf1+
        • 2.Kg3#
        • 2.Qxf1#
      • 1...Bd2
        • 2.Qf3#
      • 1...Qg1
        • 2.Qxg1#
      • 1...Qxd1!
  • Keys
    • 1.Qa1!
      • 1...Qf1+
        • 2.Kg3#
        • 2.Qxf1#
      • 1...Qxa1
        • 2.Kg3#
      • 1...Bd2
        • 2.Qa8#
      • 1...Qb1
        • 2.Kg3#
      • 1...Qc1
        • 2.Kg3#
      • 1...Qd1
        • 2.Kg3#
      • 1...Qg1
        • 2.Qxg1#
      • 1...Bc3
        • 2.Qa8#
      • 1...Bb4
        • 2.Qa8#
      • 1...Bb6
        • 2.Qxe1#
        • 2.Qa8#
      • 1...Bc7
        • 2.Qxe1#
        • 2.Qa8#
      • 1...Bd8
        • 2.Qxe1#
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_SPINQ(a),XQ(A)::R(E)+K(C)
    • Q(a);::R(E)+K(C)
    • Q(a);OGATE::QAR1(A),XQ(a)
    • B(c);N_GUARD::QAR(A),XQ(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R(E)+K(C)
        • Q(a);OGATE::QAR1(A),XQ(a)
        • B(c);::QAB(A)
      • Refutation
        • Q(a);N_SPINQ(a),XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAB(A)
        • Q(a);OGATE::QAR1(A),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XQ(A)
  • Actual
    • Q(A);
    • Vars
      • Q(a);N_SPINQ(a),SBLOCK,XQ(A)::R(E)+K(C)
      • B(c);OGATE::QAB(A)
      • Q(a);::R(E)+K(C)
      • Q(a);OGATE::QAR1(A),XQ(a)
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