MESON Chess Problem Database

Problem Display
PID: 75336 (4q3/8/3p4/2p1Pp2/3k1N2/5P2/1bQ2K1B/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Problem Observer, 2007

4q3/8/3p4/2p1Pp2/3k1N2/5P2/1bQ2K1B/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qxb2#
    • 1...Qxe5
      • 2.Qd3#
    • 1...dxe5
      • 2.Qd3#
    • 1...d5
      • 2.Se2#
  • Tries
    • 1.Qd2+?
      • 1...Kxe5
        • 2.Qxb2#
      • 1...Kc4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Se2#
      • 1...Kxe5
        • 2.Qxb2#
      • 1...Qxe5
        • 2.Qd3#
      • 1...c4
        • 2.Qe3#
      • 1...Qb5
        • 2.Se6#
      • 1...Bc3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT,XP(F)::QAB(A),XB(a)
    • Q(f);SBLOCK,XP(F)::QAR1(A)
    • P(e);SBLOCK,XP(F)::QAR1(A)
    • P(e);SBLOCK::S(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(F)::QAB(A),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(E)
    • Vars
      • K(b);S_FLIGHT,XP(F)::QAB(A),XB(a)
      • Q(f);SBLOCK,XP(F)::QAR1(A)
      • P(c);SBLOCK::QAB1(A)
      • Q(f);N_GUARD::S(E)
      • B(a);SBLOCK::QAR1(A)
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