MESON Chess Problem Database

Problem Display
PID: 256453 (1Q1R4/B7/K7/2rN4/1N1kP3/2p2P2/P1p1n3/3b1B2 w - - 0 1)

Sushkov, Yuri Akimovich

Buletin Problemistic, 1985

1Q1R4/B7/K7/2rN4/1N1kP3/2p2P2/P1p1n3/3b1B2

#2

10 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
    • 1...Sc1
      • 2.Sc6#
    • 1...Sg1
      • 2.Sc6#
    • 1...Sg3
      • 2.Sc6#
    • 1...Sf4
      • 2.Sc6#
  • Tries
    • 1.Sc6+?
      • 1...Kc4
        • 2.Se3#
        • 2.Sb6#
      • 1...Kd3!
    • 1.Bxc5+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxc5!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qxc3#
      • 1...Kxe5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.e5#
      • 1...Sxf4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(e);N_GUARD,N_SPINR(f),P-FLIGHT,P_SPINS(c)::S(F)
    • S(c);::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(e);N_SPINR(f),P-FLIGHT,P_SPINS(c)
    • Try
      • B(H);CHECK,XR(f)
      • Vars
        • K(e);N_GUARD,P-FLIGHT,P_SPINS(c)::QAB1(I)
      • Refutation
        • K(e);S_FLIGHT,XB(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);N_SPINR(f),OGATE,P-FLIGHT,P_SPINS(c)::QAR1(I),XP(d)
      • Refutation
        • K(e);N_SPINR(f),S_FLIGHT,XQ(I)
  • Actual
    • Q(I);
    • Threat
      • R(J)+S(F)
    • Vars
      • K(e);N_SPINR(f),P-FLIGHT,P_SPINS(c)::QAR(I)+P(E)
      • S(c);XQ(I)::S(D)
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