MESON Chess Problem Database

Problem Display
PID: 169033 (2R2r2/3P3p/1N3P2/kBPQB2K/P1P3p1/2P4p/8/7q w - - 0 1)

Novitski, Petr Adrinovich

Comm., SuperProblem 087. TT, 2013

2R2r2/3P3p/1N3P2/kBPQB2K/P1P3p1/2P4p/8/7q

#2

12 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qa8#
    • 1...Qb1
      • 2.Qa8#
    • 1...Qc1
      • 2.Qa8#
    • 1...Qd1
      • 2.Qa8#
    • 1...Qe1
      • 2.Qa8#
    • 1...Qf1
      • 2.Qa8#
    • 1...Qg1
      • 2.Qa8#
    • 1...Qh2
      • 2.Qa8#
    • 1...Rxf6
      • 2.Ra8#
    • 1...Rf7
      • 2.Ra8#
  • Keys
    • 1.Bc7!
      • threat
        • 2.Sa8#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Rxf6
        • 2.Ra8#
      • 1...Rxc8
        • 2.Sxc8#
      • 1...Qh2
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAR(F)
    • R(f);N_GUARD,XP(J)::R(L)
    • R(f);N_GUARD::R(L)
  • Actual
    • B(G);
    • Threat
      • B(G)+S(I)
    • Vars
      • Q(a);CHECK,XQ(F)::B(G)+S(I),XQ(a)
      • R(f);N_GUARD,XP(J)::R(L)
      • R(f);XR(L)::B(G)+S(I),XR(f)
      • Q(a);N_GUARD::QAR(F)
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