MESON Chess Problem Database

Problem Display
PID: 23696 (Rr4Q1/8/b4r2/2B2p2/1n1p4/kB6/2P1R3/N2N1K2 w - - 0 1)

Heyl, Peter

1st HM., Troll, 1997-1998

Rr4Q1/8/b4r2/2B2p2/1n1p4/kB6/2P1R3/N2N1K2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Rxa6#
    • 1...Rff8
      • 2.Rxa6#
  • Tries
    • 1.c3?
      • threat
        • 2.Sc2#
      • 1...Rxg8
        • 2.Bxb4#
      • 1...Rf7
        • 2.Rxa6#
      • 1...d3
        • 2.Ra2#
      • 1...Re6!
  • Keys
    • 1.c4!
      • threat
        • 2.Ra2#
      • 1...dxc4 ep
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::R(H),XB(e)
  • Tries
    • Try
      • P(D);
      • Threat
        • S(A)
      • Vars
        • R(g);N_GUARD,XQ(I)::B(G),XS(b)
        • R(f);N_GUARD::R(H),XB(e)
        • P(c);N_PINR(E)::R1(E)
      • Refutation
        • R(f);
  • Actual
    • P(D);N_SPINR(E)
    • Threat
      • R1(E)
    • Vars
      • P(c);EP,P_PINR(E),XP(D)::S(A)
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