MESON Chess Problem Database

Problem Display
PID: 145903 (4K3/5Ppk/7p/8/8/5N2/1B6/5Q2 w - - 0 1)

Betts, Frederick Charles

Good Companions (December Meredith Ty.), 1917

4K3/5Ppk/7p/8/8/5N2/1B6/5Q2

#2

5 + 3

15351 SCPF/BCPS Black Books 2014

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qd3#
      • 2.Qb1#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...g5
        • 2.Qc2#
      • 1...g6!
    • 1.Qd3+?
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#
      • 1...g6!
    • 1.Qb1+?
      • 1...Kh8
        • 2.f8Q#
        • 2.f8R#
      • 1...g6!
    • 1.Qg1?
      • threat
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...g5
        • 2.Qb1#
      • 1...g6!
    • 1.Qh1?
      • 1...Kh8
        • 2.Qxh6#
      • 1...h5
        • 2.Qxh5#
      • 1...g6
        • 2.Sg5#
      • 1...g5
        • 2.Qb1#
      • 1...Kg6!
    • 1.f8Q?
      • threat
        • 2.Qxg7#
      • 1...g6
        • 2.Qg7#
        • 2.Qf7#
        • 2.Qh8#
      • 1...g5
        • 2.Qd3#
        • 2.Qg7#
        • 2.Qb1#
        • 2.Qf7#
      • 1...Kg6!
  • Keys
    • 1.Qh3!
      • 1...Kg6
        • 2.f8S#
      • 1...Kh8
        • 2.Qxh6#
      • 1...h5
        • 2.Qxh5#
      • 1...g6
        • 2.Sg5#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
        • P(b);N_GUARD::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::P=Q
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::P=Q
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
        • P(b);N_GUARD::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(c);P-FLIGHT::QAR2(A),XP(a)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(b);SBLOCK::S(C)
        • P(b);N_GUARD::QAB(A)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT
    • Try
      • P(D);
      • Threat
        • QAR1(D),XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);P_PINP(a)
    • Vars
      • K(c);N_SPINP(a),S_FLIGHT::P=S
      • K(c);P-FLIGHT::QAR2(A),XP(a)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(b);SBLOCK::S(C)
      • P(b);N_GUARD::QAB(A)
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