MESON Chess Problem Database

Problem Display
PID: 103842 (k7/6Q1/8/1R2n2r/7q/3p2b1/1p6/1K5b w - - 0 1)

Bakcsi, Gyorgy

Zoltan, Laszlo

Apprenti Sorcier, 1992

k7/6Q1/8/1R2n2r/7q/3p2b1/1p6/1K5b

#2

3 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sf3
      • 2.Qb7#
    • 1...Sc6
      • 2.Qb7#
  • Keys
    • 1.Qc7!
      • threat
        • 2.Ra5#
        • 2.Rb8#
        • 2.Qa5#
        • 2.Qb8#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Qd8
        • 2.Ra5#
      • 1...Qf6
        • 2.Rb8#
        • 2.Qb8#
      • 1...Qe7
        • 2.Ra5#
        • 2.Rb8#
        • 2.Qb8#
      • 1...Qa4
        • 2.Rb8#
        • 2.Qb8#
      • 1...Qb4
        • 2.Qb8#
      • 1...Qc4
        • 2.Rb8#
        • 2.Qa5#
        • 2.Qb8#
      • 1...Qd4
        • 2.Rb8#
        • 2.Qb8#
      • 1...Rh6
        • 2.Rb8#
        • 2.Qb8#
      • 1...Rh7
        • 2.Ra5#
        • 2.Rb8#
        • 2.Qb8#
      • 1...Rh8
        • 2.Ra5#
        • 2.Qa5#
      • 1...Be1
        • 2.Rb8#
        • 2.Qb8#
      • 1...Bf2
        • 2.Rb8#
        • 2.Qb8#
      • 1...Sf3
        • 2.Rb8#
        • 2.Qa5#
        • 2.Qb7#
      • 1...Sc4
        • 2.Rb8#
      • 1...Sg4
        • 2.Rb8#
        • 2.Qa5#
      • 1...Sc6
        • 2.Qb7#
      • 1...Sg6
        • 2.Rb8#
        • 2.Qa5#
      • 1...Sd7
        • 2.Qa5#
      • 1...Sf7
        • 2.Rb8#
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(C),XB(a)
    • S(f);S_CUTB(a)::QAB1(C)
  • Actual
    • Q(C);
    • Threat
      • DUALS(4)
    • Vars
      • B(a);N_GUARD::QAB1(C),XB(a)
      • Q(e);::R(B)
      • Q(e);::QAR1(C)
      • S(f);::R1(B)
      • S(f);S_CUTB(a)::QAB1(C)
      • S(f);::QAR(C)
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