MESON Chess Problem Database

Problem Display
PID: 138308 (5n2/2pbR3/5r2/3NNp2/2Pk1P2/Q1p4R/5n2/bB3K2 w - - 0 1)

Westbury, Eric Ernest

HM., Dzien Polski, 1932

5n2/2pbR3/5r2/3NNp2/2Pk1P2/Q1p4R/5n2/bB3K2

#2

9 + 9

56 The Problemist 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Qa7#
    • 1...Se4
      • 2.Rd3#
    • 1...c2
      • 2.Qe3#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Se2#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Bxc3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf3#
      • 1...Re6
        • 2.Sxf5#
      • 1...Bc6
        • 2.Qa7#
      • 1...Be6
        • 2.Sc6#
      • 1...Se4
        • 2.Sc2#
      • 1...Se6
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(h);S_CUTP(g),S_CUTR(f)::QAB(C)
    • S(b);N_GUARD,SBLOCK::R1(D)
    • P(c);OGATE::QAB1(C)
  • Tries
    • Try
      • S(G);XP(c)
      • Threat
        • S(G)
      • Vars
        • S(b);N_GUARD::R1(D),XS(b)
      • Refutation
        • B(a);XS(G)
  • Actual
    • S(G);
    • Threat
      • S(H)
    • Vars
      • R(f);N_GUARD,S_CUTB(h)::S(G),XP(e)
      • B(h);S_CUTP(g),S_CUTR(f)::QAB(C)
      • B(h);N_GUARD,S_CUTR(f)::S(H)
      • S(b);SBLOCK::S(G)
      • S(i);N_GUARD,S_CUTR(f)::R(I),XB(h)
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