MESON Chess Problem Database

Problem Display
PID: 144767 (8/4Q3/N7/8/8/Nk1nn2R/3B4/1K6 w - - 0 1)

Teed, Frank Melville

New Orleans Times-Democrat, 1887

(First published on Sun May 15 1887)

8/4Q3/N7/8/8/Nk1nn2R/3B4/1K6

#2

6 + 3

14867 BCPS Library 2012
5454 Near Snap 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qb4#
    • 1...Se1
      • 2.Qb4#
    • 1...Sb2
      • 2.Qb4#
    • 1...Sf2
      • 2.Qb4#
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sf4
      • 2.Qb4#
    • 1...Se5
      • 2.Qb4#
    • 1...Sd1
      • 2.Qb4#
    • 1...Sf1
      • 2.Qb4#
    • 1...Sg2
      • 2.Qb4#
    • 1...Sc4
      • 2.Qb4#
    • 1...Sg4
      • 2.Qb4#
    • 1...Sf5
      • 2.Qb4#
  • Tries
    • 1.Sc5+?
      • 1...Kxa3
        • 2.Qa7#
      • 1...Sxc5!
  • Keys
    • 1.Qa7!
      • 1...Kxa3
        • 2.Sc5#
      • 1...Ka4
        • 2.Sc5#
      • 1...Sc1
        • 2.Sc5#
      • 1...Se1
        • 2.Sc5#
      • 1...Sb2
        • 2.Sc5#
      • 1...Sf2
        • 2.Sc5#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sf4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Se5
        • 2.Sc5#
      • 1...Sd1
        • 2.Sc5#
      • 1...Sf1
        • 2.Sc5#
      • 1...Sc2
        • 2.Sc5#
      • 1...Sg2
        • 2.Sc5#
      • 1...Sc4
        • 2.Sc5#
      • 1...Sg4
        • 2.Sc5#
      • 1...Sd5
        • 2.Sc5#
      • 1...Sf5
        • 2.Sc5#

This anticipates 4937(1894)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 13
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,P_SPINS(c)::QAR1(F)
    • S(b);N_GUARD,P_SPINS(c)::QAR1(F),XS(b)
    • S(c);P_SPINS(b)::QAR1(F)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR(F)
      • Refutation
        • S(b);P_SPINS(c),XS(E)
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAR(F)+S(E)
      • K(a);S_FLIGHT::QAR(F)+S(E),DCHECK
      • S(b);N_GUARD,P_SPINS(c)::S(E)
      • S(b);N_GUARD,P_SPINS(c)::S(E),XS(b)
      • S(c);P_SPINS(b)::S(E)
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