MESON Chess Problem Database

Problem Display
PID: 21179 (8/2Kp2R1/4k1P1/2R4p/1NN3rP/2B3PB/Q2n4/7b w - - 0 1)

Neill, Benjamin Milnes

Good Companions (January), 1917

8/2Kp2R1/4k1P1/2R4p/1NN3rP/2B3PB/Q2n4/7b

#2

11 + 6

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Sd6#
    • 1...Se4
      • 2.Sd6#
  • Tries
    • 1.Sxd2+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Qxd2?
      • threat
        • 2.Qd6#
        • 2.Qxd7#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bc6
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...d5!
    • 1.Qa4?
      • threat
        • 2.Qxd7#
      • 1...d5
        • 2.Qd7#
      • 1...d6
        • 2.Qd7#
        • 2.Qe8#
      • 1...Bc6!
    • 1.Qa6+?
      • 1...d6
        • 2.Qc8#
        • 2.Qxd6#
      • 1...Bc6!
    • 1.Qa8?
      • threat
        • 2.Qe8#
        • 2.Qg8#
      • 1...Bd5
        • 2.Qxd5#
      • 1...d5
        • 2.Qc8#
      • 1...Bxa8!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Rf6#
      • 1...Rxc4+
        • 2.Rc5#
      • 1...Kxf5
        • 2.Sd6#
      • 1...Rd4
        • 2.Rf4#
      • 1...Se4
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD,S_CUTB(a)::QAB(A)+S(F)
  • Tries
    • Try
      • S(F);CHECK,XS(b)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(A),XB(a)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(a);::QAR1(A)
        • P(f);::QAR1(A),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(f)
      • Vars
        • P(f);::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • P(f);OGATEB::QAB(A)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • R(H);N_PINR(c)
    • Threat
      • R1(H)
    • Vars
      • R(c);CHECK,OGATEB,P_SPINR(c),XS(F)::B(D)+R(H)
      • K(e);P_SPINR(c),S_FLIGHT,XR(H)::S(F)
      • R(c);OGATEB::B(D)+R(H)
      • S(b);N_GUARD,S_CUTB(a),S_CUTR(c)::QAB(A)+S(F)
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