MESON Chess Problem Database

Problem Display
PID: 21498 (2n1Q3/2k5/K7/2BB4/8/8/8/8 w - - 0 1)

Shinkman, William Anthony

Good Companions (February), 1919

2n1Q3/2k5/K7/2BB4/8/8/8/8

#2

4 + 2

3132 The Good Companion Two-Mover 1922
2838 Fun with Chess Miniatures 1996
133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Bd6#
    • 1...Sd6
      • 2.Bb6#
  • Tries
    • 1.Bg1?
      • 1...Kb8
        • 2.Bh2#
      • 1...Sb6
        • 2.Bh2#
      • 1...Sd6
        • 2.Bb6#
      • 1...Sa7
        • 2.Bh2#
      • 1...Se7
        • 2.Bh2#
      • 1...Kd6!
    • 1.Bf2?
      • 1...Kb8
        • 2.Bg3#
      • 1...Sb6
        • 2.Bg3#
      • 1...Sd6
        • 2.Bb6#
      • 1...Sa7
        • 2.Bg3#
      • 1...Se7
        • 2.Bg3#
      • 1...Kd6!
    • 1.Be3?
      • 1...Kb8
        • 2.Bf4#
      • 1...Sb6
        • 2.Bf4#
      • 1...Sd6
        • 2.Bb6#
      • 1...Sa7
        • 2.Bf4#
      • 1...Se7
        • 2.Bf4#
      • 1...Kd6!
    • 1.Be7?
      • 1...Kb8
        • 2.Bd6#
      • 1...Sb6
        • 2.Qd8#
      • 1...Sd6
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Sxe7!
    • 1.Qc6+?
      • 1...Kb8
        • 2.Qb7#
      • 1...Kd8!
    • 1.Qd7+?
      • 1...Kb8
        • 2.Qb7#
      • 1...Kxd7!
    • 1.Qe7+?
      • 1...Kb8
        • 2.Qb7#
      • 1...Sxe7!
    • 1.Qd8+?
      • 1...Kb8
        • 2.Bd6#
        • 2.Ba7#
      • 1...Kxd8!
  • Keys
    • 1.Bd4!
      • 1...Kd6
        • 2.Qd8#
      • 1...Kb8
        • 2.Be5#
      • 1...Sb6
        • 2.Be5#
      • 1...Sd6
        • 2.Bb6#
      • 1...Sa7
        • 2.Be5#
      • 1...Se7
        • 2.Be5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINS(b),S_FLIGHT::B(A)
    • S(b);N_GUARD,SBLOCK::B(A)
  • Tries
    • Try
      • B(A);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::B(A)
        • S(b);N_GUARD::B(A)
        • S(b);N_GUARD,SBLOCK::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::B(A)
        • S(b);N_GUARD::B(A)
        • S(b);N_GUARD,SBLOCK::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::B(A)
        • S(b);N_GUARD::B(A)
        • S(b);N_GUARD,SBLOCK::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::B(A)
        • S(b);::QAB1(D)
      • Refutation
        • S(b);XB(A)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • S(b);XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR2(D)
      • K(a);P_SPINS(b),S_FLIGHT::B(A)
      • S(b);N_GUARD::B(A)
      • S(b);N_GUARD,SBLOCK::B(A)
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