MESON Chess Problem Database

Problem Display
PID: 202898 (8/2K5/8/1pk1N3/8/8/QB2b3/8 w - - 0 1)

Voronin, Vladimir

Zadachi i Etyudi, 2016

8/2K5/8/1pk1N3/8/8/QB2b3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qa3#
    • 1...Bd1
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bf3
      • 2.Sd3#
    • 1...Bg4
      • 2.Sd3#
    • 1...Bh5
      • 2.Sd3#
  • Tries
    • 1.Bd4+?
      • 1...Kb4
        • 2.Sc6#
      • 1...Kxd4!
    • 1.Qe6?
      • threat
        • 2.Qd6#
      • 1...b4
        • 2.Qc6#
      • 1...Kb4!
    • 1.Qa7+?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd6#
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd5
        • 2.Qc6#
      • 1...b4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(c);S_FLIGHT::QAB1(A)
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD::S(C),XB(a)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C)
      • Refutation
        • K(c);S_FLIGHT,XB(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P-FLIGHT::QAB1(A)
      • P(b);SBLOCK::QAR1(A)
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