MESON Chess Problem Database

Problem Display
PID: 241048 (N4K2/5p2/p4B2/3P4/1kB1P3/5P2/1N6/7Q w - - 0 1)

Borovik, Boris V

Schweizerische Schachzeitung, 1989

N4K2/5p2/p4B2/3P4/1kB1P3/5P2/1N6/7Q

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Bc3#
      • 2.Qe1#
  • Tries
    • 1.Sd3+?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ka4
        • 2.Qa1#
      • 1...Ka5
        • 2.Qa1#
      • 1...Kxc4!
    • 1.Be7+?
      • 1...Ka5
        • 2.Qa1#
        • 2.Qe1#
      • 1...Kc3!
    • 1.Qa1?
      • 1...Kc5
        • 2.Qa3#
      • 1...a5!
    • 1.Qc1?
      • 1...Ka3
        • 2.Be7#
        • 2.Qc3#
      • 1...Ka5
        • 2.Bc3#
        • 2.Qd2#
        • 2.Qe1#
        • 2.Qc3#
      • 1...a5
        • 2.Be7#
      • 1...Kc5!
    • 1.Qd1?
      • 1...Ka3
        • 2.Qb3#
        • 2.Qa4#
      • 1...Ka5
        • 2.Bc3#
        • 2.Qa4#
        • 2.Qe1#
        • 2.Qd2#
      • 1...Kc5
        • 2.Be7#
      • 1...a5!
    • 1.Qe1+?
      • 1...Ka3
        • 2.Qc3#
        • 2.Qa5#
      • 1...Kc5!
    • 1.Qg1?
      • 1...Ka3
        • 2.Qc5#
      • 1...Ka5
        • 2.Bc3#
        • 2.Qc5#
        • 2.Qb6#
        • 2.Qe1#
      • 1...a5!
    • 1.Qh2?
      • 1...Ka3
        • 2.Be7#
        • 2.Qd6#
      • 1...Ka5
        • 2.Bc3#
        • 2.Qd2#
      • 1...a5
        • 2.Qd6#
      • 1...Kc5!
  • Keys
    • 1.Qh8!
      • 1...Ka3
        • 2.Be7#
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Be7#
      • 1...a5
        • 2.Be7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • B(G);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::B(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::B(G)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(G)
      • P(b);SBLOCK::B(G)
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