MESON Chess Problem Database

Problem Display
PID: 159497 (8/8/8/3p2K1/5B2/Q4p1k/6b1/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Schach (Borovich), 1986

8/8/8/3p2K1/5B2/Q4p1k/6b1/8

#2

3 + 4

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxf3#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qh8#
      • 1...Bf1
        • 2.Qh2#
      • 1...Bh1
        • 2.Qh2#
      • 1...d4!
    • 1.Qa1?
      • threat
        • 2.Qh8#
      • 1...Bf1
        • 2.Qxf1#
      • 1...Bh1
        • 2.Qxh1#
      • 1...d4!
    • 1.Qa2?
      • 1...d4
        • 2.Qe6#
      • 1...Bf1
        • 2.Qh2#
      • 1...Bh1
        • 2.Qh2#
      • 1...f2!
    • 1.Qb3?
      • 1...Bf1
        • 2.Qxf3#
      • 1...d4
        • 2.Qe6#
      • 1...Bh1!
    • 1.Qc3?
      • threat
        • 2.Qh8#
        • 2.Qc8#
      • 1...Bf1
        • 2.Qxf3#
      • 1...d4
        • 2.Qc8#
      • 1...Bh1!
    • 1.Qd3?
      • threat
        • 2.Qf5#
        • 2.Qh7#
      • 1...Bf1
        • 2.Qxf1#
        • 2.Qxf3#
      • 1...Bh1!
    • 1.Qe3?
      • threat
        • 2.Qe6#
      • 1...Bf1
        • 2.Qxf3#
      • 1...Bh1!
    • 1.Qa6?
      • threat
        • 2.Qc8#
        • 2.Qe6#
        • 2.Qh6#
      • 1...Bf1
        • 2.Qxf1#
      • 1...Bh1!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc8#
      • 1...Bf1
        • 2.Qxf1#
      • 1...Bh1
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAR2(A),XP(b)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAR(A)
      • Vars
        • B(a);OGATE::QAR1(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAR(A)
      • Vars
        • B(a);OGATEB::QAB(A),XB(a)
        • B(a);N_GUARD::QAR2(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • Q(A);N_PINP(b)
      • Vars
        • P(d);OGATE::QAB(A)
        • B(a);OGATE::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAR2(A),XP(b)
        • P(d);OGATE::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAR2(A),XP(b)
        • P(d);::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • B(a);N_GUARD::QAR2(A),XP(b)
      • Refutation
        • B(a);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(3)
      • Vars
        • B(a);OGATEB::QAB(A),XB(a)
      • Refutation
        • B(a);
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAB(A)
    • Vars
      • B(a);OGATEB::QAB(A),XB(a)
      • B(a);N_GUARD::QAR2(A),XB(a)
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