MESON Chess Problem Database

Problem Display
PID: 61162 (2n5/4p3/3n2BK/2N1k2b/3pP1p1/5pP1/1Q2RR1N/8 w - - 0 1)

Willmott, Arthur

3rd Prize, Problem Observer, 2005

2n5/4p3/3n2BK/2N1k2b/3pP1p1/5pP1/1Q2RR1N/8

#2

9 + 8

136 Problem Observer 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.e5#
    • 1...Bxg6
      • 2.Sxg4#
    • 1...e6
      • 2.Sd7#
  • Tries
    • 1.Sxf3+?
      • 1...Kf6
        • 2.e5#
      • 1...gxf3!
  • Keys
    • 1.Qb8!
      • 1...Kf6
        • 2.e5#
      • 1...Bxg6
        • 2.Sxg4#
      • 1...fxe2
        • 2.Rf5#
      • 1...d3
        • 2.Qb2#
      • 1...Sb6
        • 2.Qh8#
      • 1...Sa7
        • 2.Qh8#
      • 1...e6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(b),OGATE,P_SPINP(a),S_FLIGHT::P(F)
    • B(e);N_GUARD,XB(H)::S(D),XP(c)
    • P(g);SBLOCK::S(G)
  • Tries
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • K(d);OGATE,S_FLIGHT::P(F)
      • Refutation
        • P(c);XS(D)
  • Actual
    • Q(A);N_PINP(b),P_PINS(f)
    • Vars
      • K(d);N_SPINS(f),OGATE,P_SPINP(a),S_FLIGHT::P(F)
      • B(e);N_GUARD,XB(H)::S(D),XP(c)
      • P(a);OGATE,XR(B)::R1(C)
      • P(b);OGATEB::QAB(A)
      • S(h);OGATE::QAB(A)
      • P(g);SBLOCK::S(G)
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