MESON Chess Problem Database

Problem Display
PID: 42930 (1B4Q1/4p2p/2p3br/1pP1PpNp/pR1N1P1R/4k1p1/P1B5/4K3 w - - 0 1)

Sydenham, Colin Peter

The Problemist, 1976

1B4Q1/4p2p/2p3br/1pP1PpNp/pR1N1P1R/4k1p1/P1B5/4K3

#2

12 + 11

4640 Chess Wizardry: The New ABC of Chess Problems 1996
56 The Problemist 2006
15513 Selected Chess Problems of Colin Sydenham 2015
23 Die Schwalbe 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Sxf5#
    • 1...Be8
      • 2.Sxf5#
    • 1...a3
      • 2.Qb3#
  • Tries
    • 1.Qe6?
      • 1...Bf7
        • 2.Sxf5#
      • 1...Be8
        • 2.Sxf5#
      • 1...a3
        • 2.Qb3#
      • 1...g2!
    • 1.e6?
      • 1...g2
        • 2.Rh3#
      • 1...Bf7
        • 2.Sxf5#
      • 1...Be8
        • 2.Sxf5#
      • 1...a3!
  • Keys
    • 1.Sge6!
      • 1...Bf7
        • 2.Qxg3#
      • 1...Be8
        • 2.Qxg3#
      • 1...g2
        • 2.Rh3#
      • 1...a3
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::S(E),XP(e)
    • P(c);N_GUARD::QAR(L)
  • Tries
    • Try
      • Q(L);
      • Vars
        • B(h);N_GUARD::S(E),XP(e)
        • P(c);N_GUARD::QAR(L)
      • Refutation
        • P(b);
    • Try
      • P(I);
      • Vars
        • P(b);OGATEB::R(G)
        • B(h);N_GUARD::S(E),XP(e)
      • Refutation
        • P(c);
  • Actual
    • S(J);
    • Vars
      • B(h);OGATE::QAR2(L),XP(b)
      • P(b);OGATEB::R(G)
      • P(c);N_GUARD::R(D)
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Developed and maintained by Brian Stephenson.
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