MESON Chess Problem Database

Problem Display
PID: 64404 (1bQ5/rRnnk3/p2p4/6P1/K5N1/4B3/B7/4R3 w - - 0 1)

Faulkner, William J

Good Companions (May), 1919

1bQ5/rRnnk3/p2p4/6P1/K5N1/4B3/B7/4R3

#2

8 + 7

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Bc1#
      • 2.Bg1#
      • 2.Bd2#
      • 2.Bf2#
      • 2.Bd4#
      • 2.Bf4#
      • 2.Bc5#
      • 2.Bb6#
      • 2.Bxa7#
    • 1...Sa8
      • 2.Bc1#
      • 2.Bg1#
      • 2.Bd2#
      • 2.Bf2#
      • 2.Bd4#
      • 2.Bf4#
      • 2.Bc5#
      • 2.Bb6#
      • 2.Bxa7#
    • 1...Sc5+
      • 2.Bxc5#
    • 1...Sb6+
      • 2.Bxb6#
    • 1...Sf6
      • 2.gxf6#
  • Tries
    • 1.Bc5+?
      • 1...Se5
        • 2.Rxe5#
      • 1...Se6!
    • 1.Bxa7+?
      • 1...Se6
        • 2.Rxd7#
      • 1...Se5!
    • 1.Qxd7+?
      • 1...Kf8
        • 2.Rf1#
        • 2.Qf7#
      • 1...Kxd7!
  • Keys
    • 1.g6!
      • threat
        • 2.Bg5#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...Sb6+
        • 2.Bxb6#
      • 1...Se8
        • 2.Bh6#
      • 1...d5
        • 2.Bc5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(e);CHECK,N_GUARD,P_SPINS(d)::R(A)+B(C),XS(e)
    • S(e);OGATE,P_SPINS(d)::P(F),XS(e)
  • Tries
    • Try
      • B(C);CHECK,P_PINP(b)
      • Vars
        • S(e);N_GUARD,P_SPINS(e),S_CUTS(d)::R(A),XS(e)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • B(C);CHECK,XR(c)
      • Vars
        • S(d);OGATE,P_SPINS(d)::R1(G),XS(e)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(H);CHECK,XS(e)
      • Refutation
        • K(f);P-FLIGHT,P_SPINS(d),XQ(H)
  • Actual
    • P(F);
    • Threat
      • R(A)+B(C),DCHECK
    • Vars
      • S(e);CHECK,N_GUARD,P_SPINS(d)::R(A)+B(C),XS(e)
      • S(d);N_GUARD,P_SPINS(e)::R(A)+B(C)
      • P(b);::R(A)+B(C),DCHECK
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