MESON Chess Problem Database

Problem Display
PID: 166349 (k2K4/2Qp4/2q5/3B4/8/8/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

3/4 Prize, Bron MT, 1998

k2K4/2Qp4/2q5/3B4/8/8/8/8

#2

3 + 3

145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Qxb7#
    • 1...d6
      • 2.Bxc6#
  • Tries
    • 1.Ke7?
      • 1...Qb7
        • 2.Qxb7#
      • 1...d6
        • 2.Bxc6#
      • 1...Qxd5!
    • 1.Ke8?
      • 1...d6+
        • 2.Bxc6#
      • 1...Qb7
        • 2.Qxb7#
      • 1...Qxd5!
    • 1.Qb6?
      • 1...Qb7
        • 2.Qxb7#
      • 1...d6
        • 2.Bxc6#
      • 1...Qxd5!
    • 1.Qxc6+?
      • 1...Ka7
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
        • 2.Qa8#
        • 2.Qb6#
        • 2.Qc7#
      • 1...dxc6!
  • Keys
    • 1.Kc8!
      • 1...Qb7+
        • 2.Qxb7#
      • 1...Qxd5
        • 2.Qb8#
      • 1...d6
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::QAB1(B),XQ(a)
    • P(b);N_GUARD::B(A),XQ(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • Q(a);N_GUARD::QAB1(B),XQ(a)
        • P(b);N_GUARD::B(A),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(A)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);CHECK,N_GUARD::B(A),XQ(a)
        • Q(a);N_GUARD::QAB1(B),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(A)
    • Try
      • Q(B);
      • Vars
        • Q(a);N_GUARD::QAB1(B),XQ(a)
        • P(b);N_GUARD::B(A),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(A)
    • Try
      • Q(B);CHECK,XQ(a)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • P(b);P_SPINP(b),XQ(B)
  • Actual
    • K(C);P-FLIGHT,P_SPINQ(B)
    • Vars
      • Q(a);CHECK,N_PINQ(B)::QAB1(B),XQ(a)
      • Q(a);N_PINQ(B),N_SPINQ(a),XB(A)::QAR1(B)
      • P(b);N_GUARD::B(A),XQ(a)
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