MESON Chess Problem Database

Problem Display
PID: 159694 (4RBB1/1K6/3r4/1nk5/3N4/p7/8/Q7 w - - 0 1)

Andrew, Frederick William

Cheltenham Examiner, 1901

(First published on Tue Jan 29 1901)

4RBB1/1K6/3r4/1nk5/3N4/p7/8/Q7

#2

6 + 4

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sa7
      • 2.Qc3#
    • 1...Sc7
      • 2.Qc3#
  • Tries
    • 1.Rc8+?
      • 1...Sc7
        • 2.Qc3#
      • 1...Kb4!
    • 1.Qb2?
      • threat
        • 2.Re5#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qb6#
      • 1...Sc7
        • 2.Qc3#
        • 2.Qb6#
      • 1...axb2!
    • 1.Qc1+?
      • 1...Kxd4
        • 2.Qe3#
        • 2.Qc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kb4!
    • 1.Qf1?
      • threat
        • 2.Qc4#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kb4!
    • 1.Qa2?
      • threat
        • 2.Qc4#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kb4!
    • 1.Qxa3+?
      • 1...Kxd4
        • 2.Qe3#
      • 1...Sxa3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sb3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Sxd4
        • 2.Re5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sa7
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR2(A),XS(b)
    • S(b);N_GUARD::QAR2(A)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAR2(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • R(D)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);N_SPINR(d),S_FLIGHT,XS(B)::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);N_SPINR(d),S_FLIGHT,XS(B)::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(c);N_SPINR(d),OGATEB,S_FLIGHT,XS(B)::QAB1(A)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • K(c);N_SPINR(d),OGATEB,S_FLIGHT,XS(B)::QAB1(A)
      • S(b);SBLOCK,XS(B)::R(D)
      • S(b);N_GUARD::QAR2(A),XS(b)
      • S(b);N_GUARD::QAR2(A)
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