MESON Chess Problem Database

Problem Display
PID: 243147 (8/1Q4p1/8/1K1p4/3N3R/p2knP2/2b5/1BBNn3 w - - 0 1)

Banny, Dimitry Nikolaevich

Shakhmaty v SSSR, 1969

8/1Q4p1/8/1K1p4/3N3R/p2knP2/2b5/1BBNn3

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kb4?
      • threat
        • 2.Sf2#
      • 1...Sxd1
        • 2.Qa6#
        • 2.Qb5#
      • 1...Sg4!
    • 1.Qxd5?
      • threat
        • 2.Qb3#
        • 2.Qe4#
      • 1...Sxd1
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
        • 2.Qe4#
        • 2.Qf5#
      • 1...Sg4
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sxd5!
    • 1.Qc6?
      • threat
        • 2.Sf2#
        • 2.Qc3#
      • 1...Sg4
        • 2.Qc3#
      • 1...Sc4
        • 2.Qg6#
      • 1...Sxd1!
    • 1.Qc8?
      • threat
        • 2.Sf2#
        • 2.Qc3#
      • 1...Sg4
        • 2.Qc3#
      • 1...Sc4
        • 2.Qf5#
      • 1...Sxd1!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxa3#
      • 1...Sxd1
        • 2.Kb4#
      • 1...Sg4
        • 2.Kc5#
      • 1...Sc4
        • 2.Qg6#
      • 1...a2
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • S(C)
      • Refutation
        • S(e);
    • Try
      • Q(H);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_GUARD,XS(C)::QAB1(H)
      • Refutation
        • S(e);XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR1(H)
        • S(e);N_GUARD::QAB(H)
      • Refutation
        • S(e);XS(C)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR1(H)
        • S(e);N_GUARD::QAB(H)
      • Refutation
        • S(e);XS(C)
  • Actual
    • Q(H);
    • Threat
      • QAR(H),XP(c)
    • Vars
      • S(e);N_GUARD,XS(C)::QAB(H)+K(G)
      • S(e);N_GUARD::QAB(H)+K(G)
      • S(e);N_GUARD::QAB(H)
      • P(c);::QAR(H)
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