MESON Chess Problem Database

Problem Display
PID: 232175 (B3K2B/1n5R/3kpN1R/3p4/1Np3P1/2P5/1Q6/8 w - - 0 1)

Wainwright, Joseph CJ

Detroit Free Press, 1880

(First published on Sun Oct 31 1880)

B3K2B/1n5R/3kpN1R/3p4/1Np3P1/2P5/1Q6/8

#2

10 + 5

16968 Joseph Wainwright: 500+ Chess Problems (Meadley) 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qh2#
    • 1...d4
      • 2.Se4#
    • 1...e5
      • 2.Se4#
  • Tries
    • 1.Bxb7?
      • 1...Ke5
        • 2.Qh2#
      • 1...d4
        • 2.Se4#
      • 1...e5
        • 2.Se4#
      • 1...Kc5!
    • 1.Rxb7?
      • 1...Ke5
        • 2.Qh2#
      • 1...d4
        • 2.Se4#
      • 1...e5
        • 2.Se4#
        • 2.Sd7#
      • 1...Kc5!
    • 1.Rd7+?
      • 1...Ke5
        • 2.Qh2#
      • 1...Kc5!
    • 1.Qh2+?
      • 1...e5
        • 2.Se4#
      • 1...Kc5!
  • Keys
    • 1.Sbxd5!
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qh2#
      • 1...Kc6
        • 2.Qb6#
      • 1...exd5
        • 2.Se4#
      • 1...Sa5
        • 2.Se4#
      • 1...Sc5
        • 2.Qb8#
      • 1...Sd8
        • 2.Se4#
      • 1...e5
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAB(A)
    • P(b);N_GUARD::S(E)
    • P(d);::R(F)+S(E),DCHECK
  • Tries
    • Try
      • B(H);XS(e)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
        • P(b);N_GUARD::S(E)
        • P(d);::R(F)+S(E),DCHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(G);XS(e)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
        • P(b);N_GUARD::S(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • P(d);P_SPINP(d)::R(F)+S(E),DCHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(C);XP(b)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);S_FLIGHT::QAB(A)
      • K(c);P-FLIGHT,P_SPINS(e)::QAR1(A)
      • P(d);SBLOCK,XS(C)::R(F)+S(E),DCHECK
      • S(e);::S(E)
      • S(e);OGATE,SBLOCK::QAB(A)
      • P(d);SBLOCK::QAR2(A)
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