MESON Chess Problem Database

Problem Display
PID: 81681 (6Rn/3P2bp/3P1Bkp/7n/1p4NK/1B2N3/p7/8 w - - 0 1)

Macleod, Norman Alasdair

Prize, Cambridge TT, 1987

6Rn/3P2bp/3P1Bkp/7n/1p4NK/1B2N3/p7/8

#2

8 + 8

6455 The Chessboard Adventures of Norman Macleod 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Rxg7#
    • 1...Sf4
      • 2.Rxg7#
    • 1...Sxf6
      • 2.Se5#
    • 1...Sf7
      • 2.Bc2#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Se7#
      • 1...Kf7
        • 2.Sf4#
        • 2.Se7#
      • 1...Kf5!
    • 1.Bxa2?
      • 1...Sxf6
        • 2.Se5#
      • 1...Sg3
        • 2.Rxg7#
      • 1...Sf4
        • 2.Rxg7#
      • 1...Sf7
        • 2.Bb1#
      • 1...b3!
    • 1.d8S?
      • threat
        • 2.Bc2#
      • 1...Sxf6
        • 2.Se5#
      • 1...Sg3
        • 2.Rxg7#
      • 1...Sf4
        • 2.Rxg7#
      • 1...a1S!
  • Keys
    • 1.Ba1!
      • 1...Sg3
        • 2.Rxg7#
      • 1...Sf4
        • 2.Rxg7#
      • 1...Sf6
        • 2.Se5#
      • 1...Sf7
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::R1(H),XB(f)
    • S(c);SBLOCK,XB(F)::S(C)
    • S(h);SBLOCK::B(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Refutation
        • K(d);N_SPINB(f),S_FLIGHT
    • Try
      • B(A);XP(a)
      • Vars
        • S(c);SBLOCK,XB(F)::S(C)
        • S(c);N_GUARD::R1(H),XB(f)
        • S(h);SBLOCK::B(A)
      • Refutation
        • P(b);
    • Try
      • P(G);
      • Threat
        • B(A)
      • Vars
        • S(c);SBLOCK,XB(F)::S(C)
        • S(c);N_GUARD::R1(H),XB(f)
      • Refutation
        • P(a);
  • Actual
    • B(F);
    • Vars
      • S(c);N_GUARD::R1(H),XB(f)
      • S(c);SBLOCK::S(C)
      • S(h);SBLOCK::B(A)
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