MESON Chess Problem Database

Problem Display
PID: 144622 (6R1/3N2n1/7p/4P2P/Q1B1N1kP/6P1/2K4P/6B1 w - - 0 1)

Belchikov, Nikolai Ivanovich

1st Place, 08. USSR Championship, 1972-1973

6R1/3N2n1/7p/4P2P/Q1B1N1kP/6P1/2K4P/6B1

#2

12 + 3

5559 ECSC 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • 1...Kh3
        • 2.Bf1#
      • 1...Kxh5
        • 2.Bf7#
      • 1...Kf5!
    • 1.Sf2+?
      • 1...Kf5
        • 2.Rf8#
      • 1...Kxh5
        • 2.Bf7#
      • 1...Kf3!
    • 1.Sc3?
      • 1...Kf3
        • 2.Bd5#
      • 1...Kh3
        • 2.Bf1#
      • 1...Kxh5
        • 2.Bf7#
      • 1...Kf5!
    • 1.Sec5?
      • 1...Kh3
        • 2.Bf1#
      • 1...Kf5
        • 2.Bd3#
      • 1...Kxh5
        • 2.Bf7#
      • 1...Kf3!
    • 1.Sd6?
      • 1...Kh3
        • 2.Bf1#
      • 1...Kxh5
        • 2.Bf7#
      • 1...Kf3!
    • 1.Sef6+?
      • 1...Kf3
        • 2.Qc6#
        • 2.Qa8#
      • 1...Kh3
        • 2.Bf1#
      • 1...Kf5!
    • 1.Bf1?
      • 1...Kf3
        • 2.Sd2#
      • 1...Kf5
        • 2.Bh3#
      • 1...Kxh5!
    • 1.Bd5?
      • 1...Kf3
        • 2.Sc3#
      • 1...Kh3
        • 2.Sf2#
      • 1...Kf5
        • 2.Sd6#
      • 1...Kxh5!
    • 1.Rxg7+?
      • 1...Kh3
        • 2.Bf1#
      • 1...Kf5
        • 2.Sd6#
      • 1...Kxh5
        • 2.Sef6#
        • 2.Sdf6#
        • 2.Be2#
        • 2.Bf7#
      • 1...Kf3!
  • Keys
    • 1.Qc6!
      • 1...Kf3
        • 2.Sef6#
      • 1...Kh3
        • 2.Sf2#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kxh5
        • 2.Be2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::R(L)
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::S(G)
        • K(a);N_SPINS(c),S_FLIGHT::B(F)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)
    • Try
      • B(F);
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::B(F)+S(G)
        • K(a);N_SPINS(c),S_FLIGHT::S(G)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT,XP(J)
    • Try
      • R(L);CHECK,XS(c)
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_SPINS(c),S_FLIGHT::QAB(E)+S(G)
      • K(a);N_SPINS(c),S_FLIGHT::S(G)
      • K(a);N_SPINS(c),S_FLIGHT::QAB1(E)
      • K(a);N_SPINS(c),S_FLIGHT,XP(J)::B(F)
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