MESON Chess Problem Database

Problem Display
PID: 226492 (2q5/4p3/p3kp2/n4p1B/N4P2/2pR4/b3P1Q1/1n4K1 w - - 0 1)

Baird, Frederick

Sunday Chronicle, 1945

(First published on Sun Jul 1 1945)

2q5/4p3/p3kp2/n4p1B/N4P2/2pR4/b3P1Q1/1n4K1

#2

7 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sc5#
      • 2.Qg8#
    • 1...Qd7
      • 2.Sc5#
      • 2.Qg8#
    • 1...Qc4
      • 2.Qg8#
    • 1...Qc5+
      • 2.Sxc5#
    • 1...Qc6
      • 2.Qg8#
    • 1...Qc7
      • 2.Qg8#
    • 1...Qa8
      • 2.Sc5#
    • 1...Qb8
      • 2.Sc5#
    • 1...Qd8
      • 2.Sc5#
    • 1...Qe8
      • 2.Sc5#
    • 1...Qf8
      • 2.Sc5#
    • 1...Qg8
      • 2.Sc5#
      • 2.Qxg8#
    • 1...Qh8
      • 2.Sc5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sb3
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sc6
      • 2.Sc5#
  • Tries
    • 1.Be8?
      • threat
        • 2.Qg8#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Qxe8!
    • 1.Qc6+?
      • 1...Sxc6
        • 2.Sc5#
      • 1...Qxc6!
    • 1.Qg6?
      • threat
        • 2.Qf7#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qe8
        • 2.Sc5#
      • 1...Qf8
        • 2.Sc5#
      • 1...Qg8
        • 2.Sc5#
        • 2.Qxg8#
      • 1...Bd5!
    • 1.Qg7?
      • threat
        • 2.Bf7#
        • 2.Qf7#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qe8
        • 2.Sc5#
      • 1...Qf8
        • 2.Sc5#
      • 1...Qg8
        • 2.Sc5#
        • 2.Qxg8#
      • 1...Bd5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxc8#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qg8+
        • 2.Qxg8#
      • 1...Qxa8
        • 2.Sc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Qb7
        • 2.Sc5#
        • 2.Qg8#
      • 1...Qd7
        • 2.Sc5#
        • 2.Qg8#
      • 1...Qc4
        • 2.Qg8#
      • 1...Qc6
        • 2.Qg8#
      • 1...Qc7
        • 2.Qg8#
      • 1...Qb8
        • 2.Sc5#
      • 1...Qd8
        • 2.Sc5#
      • 1...Qe8
        • 2.Sc5#
      • 1...Qf8
        • 2.Sc5#
      • 1...Qh8
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(j);N_GUARD::QAB(C)
    • Q(j);CHECK,N_GUARD::S(E),XQ(j)
    • Q(j);N_GUARD::S(E)
    • B(b);N_GUARD::QAB1(C),XB(b)
    • S(d);S_CUTB(b)::QAB1(C)
    • S(d);S_CUTQ(j)::S(E)
  • Tries
    • Try
      • B(G);
      • Threat
        • QAB(C)
      • Vars
        • Q(j);CHECK,N_GUARD::S(E),XQ(j)
        • B(b);N_GUARD::QAB1(C),XB(b)
      • Refutation
        • Q(j);XB(G)
    • Try
      • Q(C);CHECK
      • Vars
        • S(d);XQ(C)::S(E)
      • Refutation
        • Q(j);XQ(C)
    • Try
      • Q(C);P_PINP(h)
      • Threat
        • QAB1(C)
      • Vars
        • Q(j);CHECK,N_GUARD::S(E),XQ(j)
        • Q(j);N_GUARD::S(E)
      • Refutation
        • B(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);CHECK,N_GUARD::S(E),XQ(j)
        • Q(j);N_GUARD::S(E)
      • Refutation
        • B(b);
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XQ(j)
    • Vars
      • Q(j);CHECK,N_GUARD::S(E),XQ(j)
      • Q(j);CHECK,OGATE::QAB(C),XQ(j)
      • Q(j);N_GUARD,XQ(C)::S(E)
      • B(b);N_GUARD::QAB1(C),XB(b)
      • Q(j);OGATE::QAB(C)
      • Q(j);N_GUARD::S(E)
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