MESON Chess Problem Database

Problem Display
PID: 120803 (3B4/8/8/1k2p3/1pN1Q3/8/1K6/8 w - - 0 1)

Zujevas, Nikolajus

Sachmatija, 2002

3B4/8/8/1k2p3/1pN1Q3/8/1K6/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qc6#
  • Tries
    • 1.Se3?
      • 1...Ka4
        • 2.Qc6#
      • 1...Kc5
        • 2.Qd5#
      • 1...b3
        • 2.Qc4#
      • 1...Ka6!
    • 1.Sd6+?
      • 1...Ka4
        • 2.Qc6#
        • 2.Qa8#
      • 1...Ka6
        • 2.Qb7#
        • 2.Qa8#
      • 1...Kc5!
    • 1.Qd5+?
      • 1...Ka4
        • 2.Sb6#
        • 2.Qc6#
        • 2.Qa5#
        • 2.Qd7#
      • 1...Ka6!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Qc6#
      • 1...Ka4
        • 2.Qc6#
      • 1...Kc5
        • 2.Qxe5#
      • 1...Ka6
        • 2.Qb7#
      • 1...b3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(C)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(C)
        • K(b);P-FLIGHT::QAR1(C)
        • P(a);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(C)
      • K(b);P-FLIGHT::QAR2(C),XP(c)
      • K(b);S_FLIGHT::QAB1(C)
      • P(a);::QAB1(C)
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Developed and maintained by Brian Stephenson.
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