MESON Chess Problem Database

Problem Display
PID: 241054 (8/8/6B1/3Q4/p7/K1P5/3p4/2k5 w - - 0 1)

Milewski, Stefan

Schweizerische Schachzeitung, 1989

8/8/6B1/3Q4/p7/K1P5/3p4/2k5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...d1B
      • 2.Qg5#
  • Tries
    • 1.Bc2?
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Kxc2!
    • 1.Qa2?
      • threat
        • 2.Qb1#
        • 2.Qa1#
        • 2.Qc2#
      • 1...d1Q
        • 2.Qb2#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qb2#
      • 1...d1R
        • 2.Qb2#
        • 2.Qc2#
      • 1...Kd1!
    • 1.Qb3?
      • threat
        • 2.Qc2#
        • 2.Qb1#
      • 1...d1Q
        • 2.Qb2#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qb2#
      • 1...d1R
        • 2.Qc2#
        • 2.Qb2#
      • 1...axb3!
    • 1.Qd3?
      • threat
        • 2.Qb1#
        • 2.Qc2#
      • 1...Kd1
        • 2.Qf1#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qe3#
      • 1...d1R
        • 2.Qc2#
      • 1...d1Q!
    • 1.Qb5?
      • threat
        • 2.Qb1#
      • 1...Kd1
        • 2.Qf1#
      • 1...d1Q
        • 2.Qb2#
      • 1...d1B
        • 2.Qb2#
        • 2.Qg5#
      • 1...d1R
        • 2.Qb2#
      • 1...d1S!
    • 1.Qf5?
      • threat
        • 2.Qb1#
        • 2.Qc2#
      • 1...Kd1
        • 2.Qf1#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qf4#
        • 2.Qg5#
      • 1...d1R
        • 2.Qc2#
      • 1...d1Q!
  • Keys
    • 1.Qg2!
      • 1...Kd1
        • 2.Qf1#
      • 1...d1Q
        • 2.Qb2#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qb2#
        • 2.Qg5#
      • 1...d1R
        • 2.Qb2#
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • B(D);
      • Vars
        • P(b);OGATE::QAR1(C),XQ(b)
        • P(b);OGATE::QAR1(C),XS(b)
        • P(b);OGATE::QAR1(C),XB(b)
        • P(b);OGATE::QAR1(C),XR(b)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);SBLOCK::QAB1(C)
        • P(b);::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAB1(C)
        • P(b);::QAR1(C)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
        • P(b);::QAR1(C)
        • P(b);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);::QAR1(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(b);OGATE,SBLOCK::QAB1(C)
      • P(b);OGATE::QAR1(C)
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