MESON Chess Problem Database

Problem Display
PID: 258610 (8/6p1/5pQb/2P1N3/3npk2/8/1B4K1/3N4 w - - 0 1)

Gundry, WH

English Mechanic and World of Science, 1900

(First published on Fri Oct 19 1900)

8/6p1/5pQb/2P1N3/3npk2/8/1B4K1/3N4

#2

6 + 6

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qg4#
    • 1...Se2
      • 2.Qg4#
    • 1...Sb3
      • 2.Qg4#
    • 1...Sf3
      • 2.Qg4#
    • 1...Sb5
      • 2.Qg4#
    • 1...Sf5
      • 2.Qg4#
    • 1...Sc6
      • 2.Qg4#
    • 1...Se6
      • 2.Qg4#
    • 1...e3
      • 2.Sd3#
    • 1...f5
      • 2.Qg3#
  • Tries
    • 1.Bc1+?
      • 1...e3
        • 2.Sd3#
      • 1...Kxe5!
    • 1.Bxd4?
      • threat
        • 2.Qg4#
      • 1...fxe5
        • 2.Be3#
      • 1...f5
        • 2.Qg3#
      • 1...Bg5!
    • 1.Qxe4+?
      • 1...Kg5
        • 2.Qg4#
      • 1...Kxe4!
  • Keys
    • 1.Sc3!
      • 1...Ke3
        • 2.Bc1#
      • 1...Kxe5
        • 2.Qxe4#
      • 1...fxe5
        • 2.Sd5#
      • 1...Bg5
        • 2.Qxe4#
      • 1...Sc2
        • 2.Sd5#
      • 1...Se2
        • 2.Sd5#
      • 1...Sb3
        • 2.Sd5#
      • 1...Sf3
        • 2.Sd5#
      • 1...Sb5
        • 2.Sd5#
      • 1...Sf5
        • 2.Sd5#
      • 1...Sc6
        • 2.Sd5#
      • 1...Se6
        • 2.Sd5#
      • 1...e3
        • 2.Sd3#
      • 1...f5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 8
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);::QAR1(F)
    • P(b);N_GUARD::S(E)
    • P(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::S(E)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • B(B);XS(a)
      • Threat
        • QAR1(F)
      • Vars
        • P(d);SBLOCK,XS(E)::B(B)
        • P(d);SBLOCK::QAB1(F)
      • Refutation
        • B(e);
    • Try
      • Q(F);CHECK,XP(b)
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P-FLIGHT,XQ(F)
  • Actual
    • S(A);
    • Vars
      • K(c);N_GUARD,S_CUTP(b),S_FLIGHT::B(B)
      • K(c);N_GUARD,S_FLIGHT,XS(E)::QAR1(F),XP(b)
      • P(d);SBLOCK,XS(E)::S(A)
      • B(e);SBLOCK::QAR1(F),XP(b)
      • S(a);::S(A)
      • P(b);N_GUARD,SBLOCK::S(E)
      • P(d);SBLOCK::QAB1(F)
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