MESON Chess Problem Database

Problem Display
PID: 224613 (4Q3/4N2r/5k1P/2P2B2/K2n1B2/8/8/8 w - - 0 1)

Bolus, Andrew

6th Prize, English Mechanic and World of Science, 1888

(First published on Fri Aug 31 1888)

4Q3/4N2r/5k1P/2P2B2/K2n1B2/8/8/8

#2

7 + 3

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh6
      • 2.Qf8#
    • 1...Rxe7
      • 2.Qg6#
    • 1...Sxf5
      • 2.Sd5#
      • 2.Sg8#
  • Tries
    • 1.Bg5+?
      • 1...Ke5
        • 2.Qb8#
      • 1...Kxg5!
  • Keys
    • 1.Qg8!
      • 1...Kxe7
        • 2.Bg5#
      • 1...Rxh6
        • 2.Qf8#
      • 1...Rxe7
        • 2.Qg6#
      • 1...Sxf5
        • 2.Sd5#
      • 1...Rf7
        • 2.Qg5#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Rh8
        • 2.Qg7#
      • 1...Sc2
        • 2.Qe6#
      • 1...Se2
        • 2.Qe6#
      • 1...Sb3
        • 2.Qe6#
      • 1...Sf3
        • 2.Qe6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,XP(E)::QAR2(G)
    • R(c);SBLOCK,XS(F)::QAR1(G)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XB(B)
  • Actual
    • Q(G);
    • Vars
      • K(b);S_FLIGHT,XS(F)::B(B)
      • R(c);N_GUARD,XP(E)::QAR2(G)
      • R(c);SBLOCK,XS(F)::QAR1(G)
      • S(a);SBLOCK,XB(D)::S(F)
      • R(c);SBLOCK::QAB1(G)
      • R(c);N_GUARD::QAB1(G),XR(c)
      • R(c);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAR1(G)
      • S(a);N_GUARD::QAR1(G),XS(a)
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