MESON Chess Problem Database

Problem Display
PID: 21358 (2Q5/3r4/2Nnk1P1/8/2PBB1N1/8/8/3KR3 w - - 0 1)

White, Alain Campbell

Good Companions (May Meredith Ty.), 1918

2Q5/3r4/2Nnk1P1/8/2PBB1N1/8/8/3KR3

#2

9 + 3

3132 The Good Companion Two-Mover 1922
5066 Classic Chess Problems by Pioneer Composers 1970

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8+?
      • 1...Re7
        • 2.Sd8#
        • 2.Qxe7#
      • 1...Sxe8!
  • Keys
    • 1.Bc5!
      • 1...Sxc4+
        • 2.Sd4#
      • 1...Sxe4+
        • 2.Sd4#
      • 1...Sb5+
        • 2.Bd3#
      • 1...Sf5+
        • 2.Bd5#
      • 1...Sb7+
        • 2.Sd4#
        • 2.Bd3#
      • 1...Sf7+
        • 2.Sd4#
      • 1...Sxc8+
        • 2.Bd3#
      • 1...Se8+
        • 2.Sd4#
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);CHECK,N_PINR(c)
      • Refutation
        • S(a);P_PINB(D),XQ(I)
  • Actual
    • B(D);
    • Vars
      • S(a);CHECK,XP(C)::S(G)
      • S(a);CHECK,P_SPINS(a),XB(E)::S(G)
      • S(a);CHECK,N_GUARD::R(B)+B(E)
      • S(a);CHECK,SBLOCK::R(B)+B(E),DCHECK
      • S(a);CHECK::S(G)
      • S(a);CHECK,N_GUARD,N_SPINR(c),XQ(I)::R(B)+B(E)
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