MESON Chess Problem Database

Problem Display
PID: 219148 (K5nR/4p1p1/4PpRb/5N1k/8/8/8/4Q3 w - - 0 1)

Barbier, Georges Emile

English Mechanic and World of Science, 1874

(First published on Fri Oct 2 1874)

K5nR/4p1p1/4PpRb/5N1k/8/8/8/4Q3

#2

6 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Kh4
        • 2.Qh1#
      • 1...Kxg6!
    • 1.Rg1?
      • threat
        • 2.Sxg7#
        • 2.Qh4#
        • 2.Qd1#
        • 2.Qe2#
      • 1...g6
        • 2.Sg7#
        • 2.Qh4#
        • 2.Qd1#
        • 2.Qe2#
      • 1...g5!
    • 1.Rg2?
      • threat
        • 2.Sxg7#
        • 2.Qh4#
        • 2.Qd1#
        • 2.Qh1#
        • 2.Qe2#
      • 1...g6
        • 2.Sg7#
        • 2.Qh4#
        • 2.Qd1#
        • 2.Qh1#
        • 2.Qe2#
      • 1...g5!
    • 1.Qe5?
      • 1...Kxg6
        • 2.Sh4#
      • 1...fxe5!
  • Keys
    • 1.Qa5!
      • 1...Kxg6
        • 2.Sh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);N_SPINB(c),S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Threat
        • DUALS(4)
      • Refutation
        • P(e);
    • Try
      • R(D);
      • Threat
        • DUALS(5)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • K(a);N_SPINB(c),S_FLIGHT,XR(D)::S(B)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);N_SPINB(c),S_FLIGHT,XR(D)::S(B)
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