MESON Chess Problem Database

Problem Display
PID: 58980 (2QN4/1p1p2P1/q4pNK/2b1PkPp/1r2r2R/1b1Rp3/4p3/1B6 w - - 0 1)

Balashov, Evgeny Fedorovich

Troll, 1998

2QN4/1p1p2P1/q4pNK/2b1PkPp/1r2r2R/1b1Rp3/4p3/1B6

#2

10 + 12

SOLUTION

  • SOUND
  • Tries
    • 1.Rd6?
      • threat
        • 2.Rf4#
      • 1...fxe5
        • 2.Se7#
      • 1...Qd3
        • 2.Rxf6#
      • 1...Bc2
        • 2.Qxd7#
      • 1...fxg5!
  • Keys
    • 1.Rxd7!
      • threat
        • 2.Rf4#
      • 1...fxe5
        • 2.Rf7#
      • 1...fxg5
        • 2.Rf7#
      • 1...Qd3
        • 2.Rd5#
      • 1...Bc2
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);P_PINR(e)
      • Threat
        • R1(C)
      • Vars
        • P(j);SBLOCK,XP(D)::S(F)
        • Q(i);N_GUARD,N_SPINR(e)::R1(B),XP(j)
        • B(b);N_GUARD,N_SPINR(e)::QAB(I),XP(l)
      • Refutation
        • P(j);XP(E)
  • Actual
    • R(B);P_PINR(e),XP(l)
    • Threat
      • R1(C)
    • Vars
      • P(j);P_PINS(F),XP(D)::QAB(I)+R(B),DCHECK
      • P(j);P_PINS(F),XP(E)::QAB(I)+R(B),DCHECK
      • Q(i);N_GUARD,N_SPINR(e)::QAB(I)+R(B)
      • B(b);N_GUARD,N_SPINR(e)::QAB(I)+R(B)
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