MESON Chess Problem Database

Problem Display
PID: 59731 (8/1B6/2P1NK1p/n1P5/4k3/N1P4Q/6p1/n6b w - - 0 1)

Shedey, Sergey Oleksandrovich

2nd Prize, British Chess Magazine, 1970

8/1B6/2P1NK1p/n1P5/4k3/N1P4Q/6p1/n6b

#2

8 + 6

3751 FIDE Album (1968-1970) 1977

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qf5#
      • 2.Qd3#
      • 2.Qf3#
    • 1...Sb3
      • 2.c7#
    • 1...Sc4
      • 2.c7#
    • 1...Sxc6
      • 2.Bxc6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qd3#
      • 1...Sxc2!
    • 1.Sg5+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd5
        • 2.Qf5#
      • 1...hxg5!
    • 1.Ba6?
      • threat
        • 2.Qd3#
      • 1...Kd5
        • 2.Qf3#
      • 1...Sc4!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Sc7#
        • 2.Qd4#
        • 2.Qd3#
        • 2.Qf3#
        • 2.Qe5#
      • 1...Kxe3!
    • 1.c7+?
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sxb7!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qd3#
      • 1...Sxc4
        • 2.c7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(e);N_GUARD::B(H)+P(E)
    • S(e);OGATE,P_SPINS(e),XP(E)::B(H),XS(e)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);S_FLIGHT::QAR2(C)
      • Refutation
        • S(a);XS(A)
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(C)
        • K(d);S_FLIGHT::QAR2(C)
      • Refutation
        • P(f);XS(F)
    • Try
      • B(H);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);S_FLIGHT::QAB(C)
      • Refutation
        • S(e);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,XQ(C)
    • Try
      • P(E);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(H),XS(e)
      • Refutation
        • S(e);XB(H)
  • Actual
    • S(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);S_FLIGHT::QAR2(C)
      • S(e);N_GUARD,XS(A)::B(H)+P(E)
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