MESON Chess Problem Database

Problem Display
PID: 241215 (7q/1N1pp2p/1K1bk2P/1N3R2/8/3B4/8/8 w - - 0 1)

Lipton, Michael

Shakhmaty (Riga), 1962

7q/1N1pp2p/1K1bk2P/1N3R2/8/3B4/8/8

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sd8#
    • 1...Qb2
      • 2.Sd8#
    • 1...Qc3
      • 2.Sd8#
    • 1...Qd4+
      • 2.Sxd4#
    • 1...Qf6
      • 2.Sd8#
    • 1...Qg7
      • 2.Sd8#
    • 1...Qa8
      • 2.Sd4#
    • 1...Qb8
      • 2.Sd4#
    • 1...Qc8
      • 2.Sd4#
    • 1...Qd8+
      • 2.Sxd8#
    • 1...Qe8
      • 2.Sd4#
    • 1...Qf8
      • 2.Sd4#
    • 1...Qg8
      • 2.Sd4#
    • 1...Bh2
      • 2.Sc5#
    • 1...Ba3
      • 2.Sc7#
    • 1...Bg3
      • 2.Sc5#
    • 1...Bb4
      • 2.Sc7#
    • 1...Bf4
      • 2.Sc5#
    • 1...Bc5+
      • 2.Sxc5#
    • 1...Bc7+
      • 2.Sxc7#
    • 1...Bb8
      • 2.Sc5#
  • Keys
    • 1.Be4!
      • 1...Qd4+
        • 2.Sxd4#
      • 1...Qd8+
        • 2.Sxd8#
      • 1...Bc5+
        • 2.Sxc5#
      • 1...Bc7+
        • 2.Sxc7#
      • 1...Qf6
        • 2.Sd8#
      • 1...Qa1
        • 2.Sd8#
      • 1...Qb2
        • 2.Sd8#
      • 1...Qc3
        • 2.Sd8#
      • 1...Qe5
        • 2.Sd8#
      • 1...Qg7
        • 2.Sd8#
      • 1...Qa8
        • 2.Sd4#
      • 1...Qb8
        • 2.Sd4#
      • 1...Qc8
        • 2.Sd4#
      • 1...Qe8
        • 2.Sd4#
      • 1...Qf8
        • 2.Sd4#
      • 1...Qg8
        • 2.Sd4#
      • 1...Bh2
        • 2.Sc5#
      • 1...Ba3
        • 2.Sc7#
      • 1...Bg3
        • 2.Sc5#
      • 1...Bb4
        • 2.Sc7#
      • 1...Bf4
        • 2.Sc5#
      • 1...Be5
        • 2.Sc5#
      • 1...Bb8
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD::S(F)
    • Q(f);N_GUARD,P_PINS(B)::S(F)
    • Q(f);CHECK,N_GUARD::S(B),XQ(f)
    • Q(f);N_GUARD::S(B)
    • Q(f);N_GUARD,P_PINS(F)::S(B)
    • Q(f);CHECK,N_GUARD::S(F),XQ(f)
    • B(a);N_GUARD::S(F)
    • B(a);N_GUARD::S(B)
    • B(a);CHECK,N_GUARD::S(F),XB(a)
    • B(a);CHECK,N_GUARD::S(B),XB(a)
  • Actual
    • B(A);
    • Vars
      • Q(f);CHECK,N_GUARD::S(B),XQ(f)
      • Q(f);CHECK,N_GUARD::S(F),XQ(f)
      • B(a);CHECK,N_GUARD::S(F),XB(a)
      • B(a);CHECK,N_GUARD::S(B),XB(a)
      • Q(f);N_GUARD::S(F)
      • Q(f);N_GUARD,P_PINS(B)::S(F)
      • Q(f);N_GUARD::S(B)
      • Q(f);N_GUARD,P_PINS(F)::S(B)
      • B(a);N_GUARD::S(F)
      • B(a);N_GUARD::S(B)
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