MESON Chess Problem Database

Problem Display
PID: 49716 (8/6p1/2pb2Kp/2N5/pB1kP1NQ/4p3/1P1nB3/8 w - - 0 1)

Mochalkin, Oleksandr Viktorovich

64 Shakhmatnoe obozrenie, 1987

8/6p1/2pb2Kp/2N5/pB1kP1NQ/4p3/1P1nB3/8

#2

8 + 8

5159 FIDE Album (1986-1988) (Annexe) 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • threat
        • 2.Bc3#
        • 2.Qxe3#
      • 1...Bxc5
        • 2.Qxe3#
        • 2.Qe5#
      • 1...Sxe4
        • 2.Se6#
      • 1...Bf4
        • 2.Bc3#
      • 1...Be5
        • 2.Qxe3#
        • 2.Qxe5#
      • 1...Sb1
        • 2.Qxe3#
      • 1...Sf1
        • 2.Bc3#
      • 1...Sc4
        • 2.Bc3#
      • 1...hxg5!
    • 1.Qf6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...gxf6!
    • 1.Qh1?
      • threat
        • 2.Se6#
      • 1...Bxc5
        • 2.Bc3#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Sf3!
    • 1.Qh5?
      • threat
        • 2.Bc3#
      • 1...Bxc5
        • 2.Qe5#
      • 1...Sxe4
        • 2.Se6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sb1!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sxc6#
      • 1...Kxe5
        • 2.Bc3#
      • 1...Bxe5
        • 2.Se6#
      • 1...Sxe4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);SBLOCK,XP(D)::S(G)
        • B(f);::B(C)
        • S(a);::QAB1(F),XP(b)
        • S(a);::B(C)
      • Refutation
        • P(g);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(F),XB(f)
      • Refutation
        • P(h);XQ(F)
    • Try
      • Q(F);
      • Threat
        • S(G)
      • Vars
        • B(f);SBLOCK,XS(G)::B(C)
        • S(a);OGATE,XP(D)::QAR1(F),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • B(C)
      • Vars
        • B(f);N_GUARD,XS(G)::QAB1(F)
        • S(a);SBLOCK,XP(D)::S(G)
        • B(f);N_GUARD::QAB1(F),XB(f)
      • Refutation
        • S(a);
  • Actual
    • S(E);
    • Threat
      • S(E),XP(e)
    • Vars
      • K(d);S_FLIGHT,XS(E)::B(C)
      • B(f);SBLOCK,XS(E)::S(G)
      • S(a);OGATE,P_SPINS(a),XP(D)::QAR1(F),XS(a)
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