MESON Chess Problem Database

Problem Display
PID: 222649 (5Rb1/5nNp/1P3P1p/3Pk2K/3p4/8/1Q6/3N3B w - - 0 1)

Schett, Sophie

English Mechanic and World of Science, 1884

(First published on Fri Jan 25 1884)

5Rb1/5nNp/1P3P1p/3Pk2K/3p4/8/1Q6/3N3B

#2

9 + 6

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qh2#
    • 1...Sg5
      • 2.Qh2#
    • 1...Sd6
      • 2.Qh2#
    • 1...Sd8
      • 2.Qh2#
    • 1...Sh8
      • 2.Qh2#
  • Tries
    • 1.Qe2+?
      • 1...Kf4
        • 2.Qh2#
      • 1...Kd6
        • 2.Qe7#
      • 1...Kxf6!
  • Keys
    • 1.d6!
      • 1...Kf4
        • 2.Qh2#
      • 1...Kxd6
        • 2.Qxd4#
      • 1...Kxf6
        • 2.Qxd4#
      • 1...Sxd6
        • 2.Qh2#
      • 1...Sg5
        • 2.Qh2#
      • 1...Sd8
        • 2.Qh2#
      • 1...Sh8
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),S_FLIGHT::QAB(C)
    • S(d);::QAB(C)
    • S(d);SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(C)
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P_SPINS(d),S_FLIGHT,XP(G)
  • Actual
    • P(D);
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::QAB(C)
      • K(b);N_SPINP(a),S_FLIGHT,XP(D)::QAR2(C),XP(a)
      • K(b);P_SPINS(d),S_FLIGHT,XP(G)::QAB(C),XP(a)
      • S(d);SBLOCK,XP(D)::QAB(C)
      • S(d);::QAB(C)
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