MESON Chess Problem Database

Problem Display
PID: 57242 (8/K7/8/p7/k1bN2Q1/3N4/p7/8 w - - 0 1)

Nikitin, Vladimir V

Troll, 1996

8/K7/8/p7/k1bN2Q1/3N4/p7/8

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qxc4#
      • 1...Kb5
        • 2.Qd7#
      • 1...Kb3!
    • 1.Qd1+?
      • 1...Bb3
        • 2.Qxb3#
      • 1...Ka3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxc4#
      • 1...Kb3
        • 2.Qd1#
      • 1...Kxb5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);P_PINB(c)
      • Threat
        • QAR2(C),XB(c)
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::QAB(C)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(C),XB(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);P_PINB(c)
    • Threat
      • QAR2(C),XB(c)
    • Vars
      • K(b);N_SPINB(c),S_FLIGHT::QAB(C)
      • K(b);N_SPINB(c),OGATEB,S_FLIGHT,XS(B)::QAB(C)
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