MESON Chess Problem Database

Problem Display
PID: 159094 (2n5/p2R4/8/kp6/b1B5/K5Q1/8/R5B1 w - - 0 1)

Andrew, Frederick William

Penny Illustrated Paper, 1894

(First published on Thu Sep 13 1894)

2n5/p2R4/8/kp6/b1B5/K5Q1/8/R5B1

#2

6 + 5

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Kxb3#
    • 1...Sb6
      • 2.Rxa7#
    • 1...Sd6
      • 2.Rxa7#
    • 1...Se7
      • 2.Rxa7#
  • Tries
    • 1.Qe1+?
      • 1...b4+
        • 2.Qxb4#
      • 1...Ka6!
    • 1.Qc7+?
      • 1...Sb6
        • 2.Qxa7#
      • 1...Ka6!
    • 1.Qc3+?
      • 1...b4+
        • 2.Qxb4#
      • 1...Ka6!
  • Keys
    • 1.Qb3!
      • 1...b4+
        • 2.Qxb4#
      • 1...Ka6
        • 2.Qxa4#
      • 1...Bxb3
        • 2.Kxb3#
      • 1...bxc4
        • 2.Qxa4#
      • 1...Sb6
        • 2.Rxa7#
      • 1...Sd6
        • 2.Rxa7#
      • 1...Se7
        • 2.Rxa7#
      • 1...a6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);::R(A)+K(C),XB(a)
    • S(e);N_GUARD::R(F),XP(d)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • P(c);CHECK,P_SPINP(c)::QAB1(D),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(D);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR2(D),XP(d)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(D);CHECK
      • Vars
        • P(c);CHECK,P_SPINP(c)::QAB1(D),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • Q(D);
    • Vars
      • P(c);CHECK::QAB1(D),XP(c)
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(D),XB(a)
      • B(a);XQ(D)::R(A)+K(C),XB(a)
      • P(c);N_GUARD,XB(E)::QAR1(D),XB(a)
      • S(e);N_GUARD::R(F),XP(d)
      • P(d);SBLOCK::QAB1(D)
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