MESON Chess Problem Database

Problem Display
PID: 205112 (8/Bp1K4/1NpP4/p1k5/q2NQ3/1p6/1P4B1/8 w - - 0 1)

Wainwright, Joseph CJ

American Chess Bulletin, 1915

8/Bp1K4/1NpP4/p1k5/q2NQ3/1p6/1P4B1/8

#2

8 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Se6#
    • 1...Qb4
      • 2.Qe5#
  • Tries
    • 1.Sd5+?
      • 1...Kc4
        • 2.Bf1#
        • 2.Qe2#
      • 1...b6!
    • 1.Qc2+?
      • 1...Kb4
        • 2.Qc3#
        • 2.Qc4#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qc4
        • 2.Qxc4#
      • 1...bxc2!
    • 1.Qd5+?
      • 1...Kb4
        • 2.Qc4#
      • 1...cxd5+!
  • Keys
    • 1.Qe1!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxd4
        • 2.Qxa5#
      • 1...Qb5
        • 2.Se6#
      • 1...Qa1
        • 2.Qc3#
      • 1...Qa2
        • 2.Qc3#
      • 1...Qa3
        • 2.Qc3#
      • 1...Qb4
        • 2.Qe5#
      • 1...Qc4
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(b);SBLOCK::S(C)
    • Q(b);SBLOCK::QAR2(D)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(D);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(C)::QAB1(D)
        • Q(b);N_GUARD,P_SPINQ(b)::QAR1(D),XQ(b)
      • Refutation
        • P(a);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(D)
      • Refutation
        • P(e);CHECK,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(d);S_FLIGHT,XS(C)::QAB1(D)
      • Q(b);N_GUARD,P_PINP(F),SBLOCK,XS(C)::QAR2(D),XP(c)
      • Q(b);SBLOCK::S(C)
      • Q(b);N_GUARD::QAR2(D)
      • Q(b);SBLOCK::QAR2(D)
      • Q(b);SBLOCK::B(G)+S(E),DCHECK
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