MESON Chess Problem Database

Problem Display
PID: 57994 (8/6bq/8/7p/Np1P3p/1P1kBQ1K/5P2/4R3 w - - 0 1)

Loyd, Sam

Baltimore News, 1883

8/6bq/8/7p/Np1P3p/1P1kBQ1K/5P2/4R3

#2

8 + 6

15 British Chess Magazine 1884
5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Qd1#
    • 1...Qe4
      • 2.Qd1#
      • 2.Qe2#
    • 1...Qf5+
      • 2.Qxf5#
    • 1...Qg8
      • 2.Qf5#
    • 1...Qh6
      • 2.Qf5#
    • 1...Qh8
      • 2.Qf5#
  • Tries
    • 1.Bc1+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kc2!
    • 1.Bf4+?
      • 1...Kc2
        • 2.Rc1#
        • 2.Qd1#
      • 1...Kxd4!
    • 1.Bg5+?
      • 1...Kc2
        • 2.Rc1#
        • 2.Qd1#
      • 1...Kxd4!
    • 1.Bh6+?
      • 1...Kc2
        • 2.Rc1#
        • 2.Qd1#
      • 1...Kxd4!
  • Keys
    • 1.Qf7!
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Kc2
        • 2.Qc4#
      • 1...Ke4
        • 2.Sc5#
      • 1...Bxd4
        • 2.Qxh7#
      • 1...Qe4
        • 2.Qc4#
      • 1...Qg6
        • 2.Qxg6#
      • 1...Qg8
        • 2.Qg6#
        • 2.Qf5#
      • 1...Qh6
        • 2.Qf5#
      • 1...Qh8
        • 2.Qg6#
        • 2.Qf5#
      • 1...Be5
        • 2.Qxh7#
      • 1...Bf6
        • 2.Qxh7#
      • 1...Bh6
        • 2.Qxh7#
      • 1...Bf8
        • 2.Qxh7#
      • 1...Bh8
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
    • Q(f);CHECK,N_GUARD::QAB(E),XQ(f)
    • Q(f);N_GUARD::QAB(E)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(H)::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • B(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(H)
    • Try
      • B(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(H)
  • Actual
    • Q(E);
    • Vars
      • Q(f);CHECK,N_GUARD::QAB(E),XQ(f)
      • K(a);S_FLIGHT::QAR2(E)
      • K(a);S_FLIGHT::S(G)
      • B(e);OGATE,XP(H)::QAB(E),XQ(f)
      • Q(f);SBLOCK::QAB1(E)
      • Q(f);N_GUARD::QAB(E),XQ(f)
      • Q(f);N_GUARD::QAB(E)
      • B(e);OGATE::QAB(E),XQ(f)
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