MESON Chess Problem Database

Problem Display
PID: 2270 (2N4b/5p1P/K4k1p/5B1R/8/8/p3Q3/q1N5 w - - 0 1)

Cook, Eugene Beauharnais

Boston Saturday Evening Gazette, 1860

(First published on Sat Feb 25 1860)

2N4b/5p1P/K4k1p/5B1R/8/8/p3Q3/q1N5

#2

7 + 6

1679 American Chess Nuts 1868
5656 Sammlung Leichterer Schachaufgaben I (Dufresne) 1881

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qxb2#
    • 1...Bg7
      • 2.Qe7#
  • Tries
    • 1.Qe3?
      • 1...Kg7
        • 2.Qxh6#
      • 1...Qxc1
        • 2.Qd4#
      • 1...Qc3
        • 2.Qxc3#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qe5
        • 2.Qxh6#
      • 1...Qb1
        • 2.Qd4#
        • 2.Qc3#
      • 1...Bg7
        • 2.Qe7#
      • 1...Qb2!
    • 1.Qe6+?
      • 1...Kg7
        • 2.Qxh6#
      • 1...fxe6!
    • 1.Qe8?
      • threat
        • 2.Qxh8#
      • 1...Bg7
        • 2.Qe7#
      • 1...Kg7!
  • Keys
    • 1.Qd2!
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg7
        • 2.Qxh6#
      • 1...Qxc1
        • 2.Qd4#
      • 1...Qc3
        • 2.Qxc3#
      • 1...Qb2
        • 2.Qxb2#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qe5
        • 2.Qxh6#
      • 1...Qb1
        • 2.Qc3#
        • 2.Qd4#
      • 1...Bg7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::QAB(B),XQ(a)
    • B(f);SBLOCK::QAB1(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(B),XP(d)
        • Q(a);N_GUARD,XS(A)::QAB(B)
        • Q(a);N_GUARD::QAB(B),XQ(a)
        • Q(a);SBLOCK::QAR2(B),XP(d)
        • B(f);SBLOCK::QAB1(B)
      • Refutation
        • Q(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(B),XP(d)
      • Refutation
        • P(e);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB(B),XB(f)
      • Vars
        • B(f);SBLOCK::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);S_FLIGHT::QAB1(B),XP(d)
      • Q(a);N_GUARD,XS(A)::QAB(B)
      • Q(a);N_GUARD::QAB(B),XQ(a)
      • Q(a);SBLOCK::QAR2(B),XP(d)
      • B(f);SBLOCK::QAR2(B)
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