MESON Chess Problem Database

Problem Display
PID: 219130 (3k4/B2b4/2pK4/8/8/8/1Q6/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1978

3k4/B2b4/2pK4/8/8/8/1Q6/8

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.Qb8#
    • 1...Bh3
      • 2.Qh8#
    • 1...Bg4
      • 2.Qh8#
    • 1...Bf5
      • 2.Qh8#
    • 1...Bc8
      • 2.Qh8#
    • 1...Be8
      • 2.Qb8#
  • Tries
    • 1.Qf6+?
      • 1...Ke8
        • 2.Qe7#
      • 1...Kc8!
    • 1.Qb6+?
      • 1...Kc8
        • 2.Qc7#
        • 2.Qb8#
      • 1...Ke8!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qxd7#
      • 1...Kc8
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qe7#
        • 2.Qg8#
      • 1...Bh3
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Bg4
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Bf5
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Be6
        • 2.Qf8#
      • 1...Bc8
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qe7#
        • 2.Qg8#
      • 1...Be8
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • K(c);P-FLIGHT::QAR1(A)
    • B(b);N_GUARD::QAR(A)
    • B(b);N_GUARD,SBLOCK::QAR(A)
    • B(b);N_GUARD,SBLOCK::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XB(b)
    • Vars
      • K(c);P-FLIGHT::QAB1(A),XB(b)
      • B(b);N_GUARD::QAR2(A)
      • B(b);OGATE,SBLOCK::QAB1(A)
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