MESON Chess Problem Database

Problem Display
PID: 168736 (R1B5/N4b2/pk1P2pK/1Pp2p2/6p1/8/r1pB4/4Q3 w - - 0 1)

Novitski, Petr Adrinovich

Sachmatija, 2012

R1B5/N4b2/pk1P2pK/1Pp2p2/6p1/8/r1pB4/4Q3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Ba5#
    • 1...Ra5
      • 2.Bxa5#
    • 1...c4
      • 2.Be3#
      • 2.Qf2#
      • 2.Qg1#
      • 2.Qe3#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Qd8#
      • 1...c4
        • 2.Qf2#
      • 1...g5!
    • 1.Qh1?
      • threat
        • 2.Qc6#
        • 2.Qb7#
      • 1...c4
        • 2.Qc6#
        • 2.Qg1#
      • 1...Be8
        • 2.Qb7#
      • 1...Bd5!
    • 1.Qe8?
      • threat
        • 2.Qc6#
        • 2.Qd8#
      • 1...c4
        • 2.Qc6#
        • 2.Qe3#
      • 1...Bd5
        • 2.Qd8#
      • 1...Bxe8!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Rb8#
        • 2.Qd8#
        • 2.Qb7#
        • 2.Qc7#
      • 1...c4
        • 2.Qe3#
        • 2.Qc7#
      • 1...Bd5
        • 2.Qd8#
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::B(B)
    • R(a);N_GUARD::B(B),XR(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(h);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::QAR1(A)
      • Refutation
        • B(i);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::QAB(A)
      • Refutation
        • B(i);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • DUALS(4)
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